Louisiana Superdome, New Orleans

Slides:

Advertisements

Similar presentations

General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.1 Chapter 3 Atoms and Elements 3.5 Isotopes and Atomic Mass.

Advertisements

Atoms and Elements. Atoms Atoms are the “building blocks” of all matter and are the simplest form of molecule. They are all made up of protons, neutrons.

Hosted by Your 8 th Grade Science Teacher! AtomsElements Periodic Table Anything Goes

08/09/2015 Starter - Elements and symbols that you should know: Part 1 – The obvious ones: 1)Hydrogen 2)Helium 3)Lithium 4)Beryllium 5)Boron 6)Carbon 7)Nitrogen.

Elements and Symbols Practice. PART I (SLIDES WITH BLUE BACKGROUNDS) Directions: Name the Symbol for each listed element.

The Atom. What do you know? Part of AtomLocationMasscharge.

Properties of Atoms & the Periodic Table I. Structure of the Atom + -an _____ is the ________ ____ of an _______, and is made up of its _______, which.

Atoms & Isotopes NOTES. Reading the Periodic Table AEMAEM Atomic Number Average Atomic Mass Element Symbol.

Unit 2 Review - Section 1 Atomic Structure and Mass.

PRACTICE THE ELEMENT S IN GROUPS Na Fe Pb Zn Sn K.

PRACTIC E THE ELEMENT S IN GROUPS Na Fe Pb Zn Sn K.

5.2 The Structure of the Atom

Atomic Theory Review: Part II. 1. What is the subatomic particle that determines the identity of the element? A. Protons B. Electrons C. neutrons.

Elements and Compounds

Writing Elemental Symbols Distinguishing Among Atoms.

ATOMIC THEORY REVIEW. ATOMS !!! What are the 3 subatomic particles? Protons neutrons electrons What is ALL matter made of?

Chapter 19 – Properties of Atoms and the Periodic table

Chapter 19 – Properties of Atoms and the Periodic table 19.1 – Structure of the Atom Guided Notes Page.

Periodic The Table REVIE W. Periodic Table Review Write the missing information (?) for each number.

Chapter 4: Atoms and Elements.  Describe the respective properties and charges of electrons, neutrons, and protons.  Determine the atomic symbol and.

CHEMICAL INTERACTIONS Ch 1.1 Atoms are the smallest forms of elements.

A CLOSER LOOK AT THE ELEMENTS

The Cell and The Chemistry of Living Things

Masses of Atoms.

Progression of Atomic Models

Calculating Average Mass

Chapter 2 Matter and Change Mixtures 2.1 Properties of Matter

Basic Atomic Structure

Basic Atomic Structure

Chapter 2 Atoms and Elements

Chapter 2 Atoms and Elements

ATOMIC THEORY REVIEW.

Warm Up What is this?.

A CLOSER LOOK AT THE ELEMENTS

Assignment #9 Atomic # = p+ = e- (neutral atom)

Atoms, Atomic Number, Mass Number

3.5 NOTES Mixtures and Pure Substances

19/09/2018 Atoms and Elements W Richards Worthing High School.

19/09/2018 Atoms and Elements.

19/09/2018 Atoms and Elements.

A B 21085At Fe Mo 5827Co 3216S Pb4+ Symbol

20/09/2018 Atoms and Elements W Richards The Weald School.

Periodic Table Element flashcards

Today’s Agenda… Bellringer: Make sure you are finished with your venn diagram/writing frame Take up Venn diagram/Writing frame Notes on The Periodic Table.

Today’s Agenda…9-28 Turn in corrections/signed tests

Elements, Atoms, and Ions

Bellwork or Teacher’s Pet – Atoms: Write 3 facts for the video.

Atomic Symbols.

Atomic Particles Particle Charge Mass # Location Electron -1

Atomic Structure Walk Around

Distinguishing Between Atoms

H stands for the hydrogen atom He is helium Li is lithium

Review from last class What is: An atom? An element? A molecule?

0:56 0:55 0:54 0:53 0:57 0:58 1:02 1:01 1:00 0:59 0:52 0:51 0:44 0:43 0:42 0:41 0:45 0:46 0:50 0:49 0:48 0:47 1:03 1:04 1:19 1:18 1:17 1:16 1:20 1:21 1:25.

Chapter 2 Atoms and Elements

Chapter 2 Matter and Change Mixtures 2.1 Properties of Matter

Chapter 2 Matter and Change Mixtures 2.1 Properties of Matter

Chapter 2 Atoms and Elements

13/04/2019 Atoms and Elements W Richards The Weald School.

Atomic Masses 16.2.

Structure of an Atom.

17/05/2019 Atoms and Elements W Richards Worthing High School.

Protons & Neutrons.

Isotopes Atoms of the same element with a different number of neutrons

Isotopes & Ions.

Atomic Number Chemical Symbol Name of Element Atomic Mass

Elements and Compounds

Chapter 2 Atoms and Elements

Increase in Ease of Oxidation

Section 2: Masses of Atoms

Presentation transcript:

Louisiana Superdome, New Orleans Properties of Atoms & the Periodic Table I. Structure of the Atom -an _____ is the ________ ____ of an _______, and is made up of its _______, which contains _______ ___ of an ______ _____ and ______ but ________ _____ of an ______ ______, and its _______ _____, which contains _______ ___ of an ______ _______ but _______ _____ of an ______ _____ or _______ atom smallest unit element nucleus virtually all atom’s mass weight virtually none atom’s volume electron cloud virtually all atom’s volume virtually none atom’s mass weight Louisiana Superdome, New Orleans electron cloud + nucleus http://www.fussballtempel.net/concacaf/USA/Louisiana_Superdome.html

Properties of Atoms & the Periodic Table I. Structure of the Atom -the _________ ________ ______ of _______ ________ most closely resembles _____ ______ ______, except _________ _______ that ________ ______ in _____ of __________ instead of _____ ______ currently accepted model atomic structure Niels Bohr’s model scientists theorize electrons travel areas probability fixed orbits Niels Bohr, (1885-1962)

- Properties of Atoms & the Periodic Table I. Structure of the Atom C Carbon Name 6 Atomic Number C Symbol 12.011 Atomic Mass + + + + proton + + neutron + - electron nucleus

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom Carbon Name 6 Atomic Number C Symbol 12.011 Atomic Mass 1s + 2s + + + proton + - - + neutron + - electron nucleus electron cloud

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Carbon Name 6 Atomic Number C Symbol 12.011 Atomic Mass 1s - + 2s + + + proton + - - 2px + - neutron + - - electron nucleus electron cloud

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Carbon Name 6 Atomic Number C Symbol 12.011 Atomic Mass 1s - + - - 2s + + + proton + - - 2px + - neutron + - - 2py electron 2pz nucleus electron cloud

- Properties of Atoms & the Periodic Table I. Structure of the Atom O Oxygen Name 8 Atomic Number O Symbol 15.999 Atomic Mass + + + + proton + + + neutron + + - electron nucleus

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom Oxygen Name 8 Atomic Number O Symbol 15.999 Atomic Mass 1s + 2s + + + proton + - - + + neutron + + - electron nucleus electron cloud

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Oxygen Name 8 Atomic Number O Symbol 15.999 Atomic Mass 1s - + 2s + + + proton + - - 2px + + - neutron + + - - electron nucleus electron cloud

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Oxygen Name 8 Atomic Number O Symbol 15.999 Atomic Mass 1s - - + - 2s + + + proton + - - 2px + + - neutron + + - - 2py electron 2pz nucleus electron cloud

- - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Oxygen Name 8 Atomic Number O Symbol 15.999 Atomic Mass 1s - - + - - 2s + + + proton + - - 2px + + - neutron + + - - 2py electron 2pz nucleus electron cloud

- Properties of Atoms & the Periodic Table I. Structure of the Atom Na Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass + + + + + + proton + + + + neutron + + - electron nucleus

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass 1s + + + 2s + + + proton + + - - + + neutron + + - electron nucleus electron cloud

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass 1s - + + + 2s + + + proton + + - - 2px + + - neutron + + - - electron nucleus electron cloud

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass 1s - + + + - - 2s + + + proton + + - - 2px + + - neutron + + - - 2py electron 2pz nucleus electron cloud

- - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass 1s - + + - + - - 2s + + + proton + + - - 2px + + - neutron + + - - 2py electron 2pz nucleus electron cloud

- - - - - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Sodium Name 11 Atomic Number Na Symbol 22.990 Atomic Mass 1s - + + - - + - - - 2s + + + proton + + - - 2px + - + - neutron + + - - 2py electron 3s 2pz nucleus electron cloud

- Properties of Atoms & the Periodic Table I. Structure of the Atom K Potassium Name 19 Atomic Number K Symbol 39.098 Atomic Mass 19 + + proton 20 neutron - electron K -Potassium = Kalium Au -Gold = Aurum Pb nucleus -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom Potassium Name 19 Atomic Number K Symbol 39.098 Atomic Mass 1s 2s 19 + + proton - - 20 neutron - electron K -Potassium = Kalium Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Potassium Name 19 Atomic Number K Symbol 39.098 Atomic Mass 1s - 2s 19 + + proton - - 2px 20 - neutron - - electron K -Potassium = Kalium Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Potassium Name 19 Atomic Number K Symbol 39.098 Atomic Mass 1s - - - 2s 19 + + proton - - 2px 20 - neutron - - 2py electron K -Potassium = Kalium 2pz Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

- - - - - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Potassium Name 19 Atomic Number K Symbol 39.098 Atomic Mass 1s - - - - - - 2s 19 + + proton - - 2px - 20 - neutron - - 2py electron 3s K -Potassium = Kalium 2pz Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

Properties of Atoms & the Periodic Table I. Structure of the Atom 3pz 3py Potassium Name 19 Atomic Number K Symbol 3px 39.098 Atomic Mass - 1s - - - - - - - - 2s 19 + + proton - - 2px - 20 - neutron - - - 2py electron 3s K -Potassium = Kalium 2pz Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

Properties of Atoms & the Periodic Table I. Structure of the Atom 3pz 3py Potassium Name 19 Atomic Number K Symbol 3px 39.098 Atomic Mass - 1s - - - - - - - - - 2s 19 + + proton - - 2px - 20 - neutron - - - 2py electron 3s 4s K -Potassium = Kalium 2pz Au -Gold = Aurum Pb nucleus electron cloud -Lead = Plumbum Ag -Silver = Argentum Sn -Tin = Stannum Sb -Antimony = Stibnum Fe -Iron = Ferrum W -Tungsten = Wolfram Ag -Silver = Argentum Na -Sodium = Natrium Cu -Copper = Cuprum

- Properties of Atoms & the Periodic Table I. Structure of the Atom Fe Iron Name 26 Atomic Number Fe Symbol 55.845 Atomic Mass 26 + + proton 30 neutron - electron nucleus

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom Iron Name 26 Atomic Number Fe Symbol 55.845 Atomic Mass 1s 2s 26 + + proton - - 30 neutron - electron nucleus electron cloud

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Iron Name 26 Atomic Number Fe Symbol 55.845 Atomic Mass 1s - 2s 26 + + proton - - 2px 30 - neutron - - electron nucleus electron cloud

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Iron Name 26 Atomic Number Fe Symbol 55.845 Atomic Mass 1s - - - 2s 26 + + proton - - 2px 30 - neutron - - 2py electron 2pz nucleus electron cloud

- - - - - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom Iron Name 26 Atomic Number Fe Symbol 55.845 Atomic Mass 1s - - - - - - 2s 26 + + proton - - 2px - 30 - neutron - - 2py electron 3s 2pz nucleus electron cloud

Properties of Atoms & the Periodic Table I. Structure of the Atom 3pz 3py Iron Name 26 Atomic Number Fe Symbol 3px 55.845 Atomic Mass - 1s - - - - - - - - 2s 26 + + proton - - 2px - 30 - neutron - - - 2py electron 3s 2pz nucleus electron cloud

- - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom 3pz 3py Iron Name 26 Atomic Number Fe Symbol 3px 55.845 Atomic Mass - 1s - - - - - - - - - 2s 26 + + proton - - 2px - - 30 - neutron - - - - 2py electron - - 3s 4s 2pz nucleus electron cloud

- - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom 3pz 3py Iron Name 26 3dxz Atomic Number Fe Symbol 3px 55.845 Atomic Mass - 1s - - - - - - - - - 2s 26 + + proton - - - 2px - - 30 - - neutron - - - - - 2py 3dxy - electron - - - 3s 4s 2pz 3dyz 3dx2-y2 3dz2 nucleus electron cloud d orbital 3dxy 3dxz 3dyz 3dx2-y2 3dz2

- Properties of Atoms & the Periodic Table I. Structure of the Atom -the ______ _____ is made up of a _______ of ___ _______, the _____ of which have ____ ______, (which makes them all ______ _____), but ____ in the ______ of ________ element Boron mixture two isotopes atoms five Boron Name protons Boron 5 Atomic No. B atoms vary number neutrons Symbol 10.811 Atomic Mass + proton neutron - 5 + electron 6 nucleus A. Calculating Average Atomic Mass Of all the Boron atoms on Earth, 80.1% are Boron-11, and 19.9% are Boron-10. What is the average atomic mass of Boron? 0.801 (11.009 amu) + 0.199 (10.013 amu) = 10.8 amu

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom -the ______ _____ is made up of a _______ of ___ _______, the _____ of which have ____ ______, (which makes them all ______ _____), but ____ in the ______ of ________ element Boron mixture two isotopes atoms five Boron Name protons Boron 5 Atomic No. B atoms vary number neutrons Symbol 10.811 Atomic Mass 1s + proton neutron 2s - 5 + electron - - 6 nucleus electron cloud A. Calculating Average Atomic Mass Of all the Boron atoms on Earth, 80.1% are Boron-11, and 19.9% are Boron-10. What is the average atomic mass of Boron? 0.801 (11.009 amu) + 0.199 (10.013 amu) = 10.8 amu

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom -the ______ _____ is made up of a _______ of ___ _______, the _____ of which have ____ ______, (which makes them all ______ _____), but ____ in the ______ of ________ element Boron mixture two isotopes atoms five Boron Name protons Boron 5 Atomic No. B atoms vary number neutrons Symbol 10.811 Atomic Mass 1s + proton - neutron 2s - 5 + electron - - 2px 6 - - nucleus electron cloud A. Calculating Average Atomic Mass Of all the Boron atoms on Earth, 80.1% are Boron-11, and 19.9% are Boron-10. What is the average atomic mass of Boron? 0.801 (11.009 amu) + 0.199 (10.013 amu) = 10.8 amu

- Properties of Atoms & the Periodic Table I. Structure of the Atom Li Lithium Name 3 Atomic No. 3 + Li Symbol 4 6.941 Atomic Mass + proton nucleus neutron - electron A. Calculating Average Atomic Mass Of all the Lithium atoms on Earth, 92.41% are Lithium-7, and 7.59% are Lithium-6. What is the average atomic mass of Lithium? 0.9241 (7.0160 amu) + 0.0759 (6.0151 amu) = 6.94 amu

- Properties of Atoms & the Periodic Table I. Structure of the Atom Mg Magnesium Name 12 Atomic No. 12 + Mg Symbol 12 24.305 Atomic Mass + proton nucleus neutron - electron A. Calculating Average Atomic Mass Of all the Magnesium atoms on Earth, 78.99% are Magnesium-24, with an atomic mass of 23.985 amu, 10.005% are Magnesium-25, with an atomic mass of 24.986 amu, and 11.01% are Magnesium-26, with an atomic mass of 25.9826 amu. What is the average atomic mass of Magnesium? 0.7899 (23.985 amu) + 0.10005 (24.986 amu) + 0.1101 (25.9826 amu) = 24.31 amu

- - - Properties of Atoms & the Periodic Table I. Structure of the Atom 1s 2s Barium Name 56 56 + Atomic Number - - Ba Symbol 81 137.327 Atomic Mass + proton neutron - electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s

- - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom 1s - Barium Name 2s 56 56 + Atomic Number - - 2px Ba Symbol 81 - 137.327 Atomic Mass - + proton neutron - electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 2p

- - - - - - - - Properties of Atoms & the Periodic Table I. Structure of the Atom 1s - - Barium Name - 2s 56 56 + Atomic Number - - 2px Ba - Symbol 81 137.327 Atomic Mass - 2py 2pz + proton neutron - electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 2p

- - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 3py I. Structure of the Atom 3px - 1s - - - - - Barium Name - - - 2s 56 56 + Atomic Number - - 2px Ba - - - Symbol 81 - - - 137.327 Atomic Mass - 2py - - 3s 4s 2pz + proton neutron - electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p

- - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 3py 3dxz I. Structure of the Atom 3px - 1s - - - - - Barium Name - - - - 2s 56 56 + Atomic Number - - - 2px Ba - - Symbol 81 - - - - - 137.327 Atomic Mass - 2py 3dxy - - - - 3s 4s 2pz + proton 3dyz 3dx2-y2 neutron - 3dz2 electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 3d 42

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 3py 3dxz I. Structure of the Atom 3px - - - 1s - - - - - - - Barium Name - - - - 2s 56 56 + Atomic Number - - - - 2px Ba - - Symbol 81 - - - - 137.327 Atomic Mass - - 2py 3dxy - - - - 3s 4s 2pz + proton 3dyz 3dx2-y2 neutron - 3dz2 electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 3d 43

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 4px 3py 4py 3dxz I. Structure of the Atom 4pz 3px - - - - 1s - - - - - - - - Barium Name - - - - 2s 56 56 + Atomic Number - - - - - - 2px Ba - - Symbol 81 - - - 137.327 Atomic Mass - - - - 2py 3dxy - - - - 3s - 4s 2pz + proton 3dyz 3dx2-y2 neutron - 3dz2 electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 3d 4p 44

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 4px 3py 4dyz 4py 3dxz 4dxy I. Structure of the Atom 4pz 3px - - - 4dx2-y2 - - - 1s - - - - - - - - - Barium Name - - - - - 2s - 56 56 + - Atomic Number - - - - - - 2px Ba - - - Symbol 81 - - - - - - - - 137.327 Atomic Mass - 2py 3dxy - - - - - 3s - - - 4s 2pz + proton 4dxz 3dyz 5s 3dx2-y2 neutron - 3dz2 4dz2 electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 5s 3d 4p 4d 45

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 4px 3py 5py 4dyz 4py 3dxz 4dxy I. Structure of the Atom - 4pz 3px - - - 4dx2-y2 - - - 1s - - - 5px - - - - - - - Barium Name - - - - - 2s - 56 56 + - - Atomic Number - - - - - - - 2px Ba - - - Symbol 81 - - - - - - 5px - - - 137.327 Atomic Mass - 2py 3dxy - - - - - 3s - - - 4s - 2pz + proton 4dxz 3dyz 5s 3dx2-y2 neutron - 3dz2 4dz2 electron nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 5s 3d 4p 4d 5p 46

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Properties of Atoms & the Periodic Table 3pz 4px 3py 5py 4dyz 4py 3dxz 4dxy I. Structure of the Atom - 4pz 3px - - - 4dx2-y2 - - - 1s - - - 5px - - - - - - - - Barium Name - - - - - 2s - 56 56 + - - Atomic Number - - - - - - - 2px Ba - - - Symbol 81 - - - - - - 5px 137.327 Atomic Mass - - - - - 2py 3dxy - - - - - 3s - - - 4s - 2pz + proton 4dxz 3dyz 5s 3dx2-y2 neutron - 3dz2 4dz2 electron 6s nucleus electron cloud B. Orbital Notation Ba Orbital Notation 1s 2s 3s 4s 2p 3p 5s 3d 4p 6s 4d 5p 47