ELECTRONS AVAILABLE FOR BONDING

Slides:

Advertisements

Similar presentations

ELECTRONS AVAILABLE FOR BONDING

Advertisements

Oxidation Numbers.

Why are electrons important? Electrons are responsible for HOW ELEMENTS REACT That is why we learned how to: – Write electron configurations – Draw electron.

Question set 1 Question set 2 Question set 3 Question set 4 Question set 5 Question set 6 $ $ $ $ $ $ $

Organizing the Elements

Introduction to ATOMS. Electrons are always on the move.

The Periodic Table 1 18 Group 1 Alkali Metals

PRACTICE DRAWING ATOMS. DRAWING ATOMS RULES PROTONS = Atomic number ELECTRONS = Atomic number NEUTRONS = mass number – atomic number 1 st level can hold.

Valence electrons the electrons that are in the highest (outermost) energy level that level is also called the valence shell of the atom they are held.

Bluff! A Game and Study Guide All In One!. Rules In turn, each team will be asked a question. Team members who know the answer will stand up. The other.

# of valence electrons = 1 P: 3 N: P+: 3 e-: 3 N: 4 Let’s do together:

The Periodic Table Flip Book

Representing Atoms Visually Lewis Dot Diagrams (Dot Diagrams; Lewis Structures)

Lewis Structure and Bonding. Lewis Dot Diagram of Atoms The chemical symbol for the atom is surrounded by a number of dots corresponding to the number.

Chapter 7. Objectives-7.1  Determine the number of valence electrons in a representative element.  Explain how the octet rule applies to atoms of metallic.

CHEMICAL BONDING Occurs when 2 or more atoms combine by sharing or transferring electrons. –Can be from the same element (O 2 ) or different elements (NaCl)

 Electrons are found in specific orbits/clouds spinning around the nucleus  Orbits are named: 1s,2s,2p,3s,3p,3d,4s,4p,4d,4f,5s,5p,5d,5f,6s,6p,6d,6f,7s.

Metals High luster when cleaned and high conductivity Non-metals Low luster when cleaned and low conductivity Metalloids Combo of metals and non-metals.

Everything that is underlined should get filled in on your notes!

 Elements are arranged according to atomic number  Number of protons  Not atomic mass.

Trends in the Periodic Table. Groups Alkali metals – group 1 Alkaline Earth Metals – group 2 Transition Metals – groups 3-12 Halogens – group 17 Noble.

IONS 7.1 Valence Electrons, The Octet Rule, and formation of Cations and Anions.

Valence Electrons and Lewis Dot Structures. 118 Known Elements 1 ve - 2 ve - 3 ve - 4 ve - 5 ve - 6 ve - 7 ve - 8 ve - ve - = valence electrons IGNORE.

Groups/Columns/Families: vertical. Have similar properties. Periodic Table: Special Families 1.Group 1: Alkali Metals – 1 electron in the valence (outermost)

Chapter Sixteen: Compounds  16.1 Chemical Bonds and Electrons  16.2 Chemical Formulas  16.3 Molecules and Carbon Compounds.

Bonds, Atomic Bonds. Valence Number  Number of electrons an atom has in its outer energy level.  All atoms want 8 electrons in their outer energy level.

Families of Elements Characteristics. Family Characteristics Each Family has similar characteristics due to the number of electrons in the outer most.

Atomic number = number of protons # protons = # electrons IN NEUTRAL ATOMS.

First 20 Elements in the Periodic Table

Periodic Table and Stability in Bonding

Science 9 Periodic Table Review

Types of Bonding and Lewis Structures

CHEMISTRY December 3, 2014 VALENCE ELECTRONS.

Electron Configurations and Lewis Dot Diagrams

Atoms, Bonding and the Periodic Table

Valence Electrons by Group

A Lewis dot diagram is an easy way to represent an atom’s valence electrons using dots around the element’s symbol Lewis dot diagram Bohr Model.

How to predict the number of valence electrons for an atom.

Electron Configurations and Lewis Dot Diagrams

The Periodic Table of the Elements

Classifying the Elements

Ions and the Octet Rule.

Valence Electrons.

Al Si Ne Li He P H Periodic Table Basics Be O Mg F Na N B C Cl

Valence electrons and properties

Periodic Groups.

Periodic Table Notes Part 1 Created by Harris M. S.

Al Si Ne Li He P H Periodic Table Basics Be O Mg F Na N B C Cl

It’s all about the elements!

Atom Model Using Periodic Table Boxes

Periodic Table Notes Part 1 Created by Harris M. S.

Al Si Ne Li He P H Periodic Table Basics Be O Mg F Na N B C Cl

Periodic Table Guide METALS Metalloids/Semimetals NONMETALS

Periodic Table of Elements how it is arranged how it is used

Unit 5 – Bonding Mrs. Callender

Bell Ringer Continue working on Chapter 5 Vocabulary in your notebook. (p. 178)

Valence Electrons and Ions

Valence Electrons.

ELECTRONS AVAILABLE FOR BONDING

ELECTRONS AVAILABLE FOR BONDING

Do Now & Announcements Work on Do Now & take out notes from yesterday

Elements are arranged:

Objectives Know how to use the periodic table to determine the number of electrons available for bonding. Know how to draw Lewis dot structures.

Al Si Ne Li He P H Periodic Table Basics Be O Mg F Na N B C Cl

Al Si Ne Li He P H Periodic Table Basics Be O Mg F Na N B C Cl

Ionic Compounds Atoms are rarely found in nature in their pure state. Most often they are combined with other elements in compounds. Two major types of.

VALENCE ELECTRONS The valence electrons are the electrons in the outermost shell or energy level of an atom. The valence electrons are the ones involved.

Patterns in the Periodic Table

Presentation transcript:

ELECTRONS AVAILABLE FOR BONDING Valence Electrons: ELECTRONS AVAILABLE FOR BONDING

What is a valence electron? Valence electrons are the electrons found on the OUTER most energy shell of an atom Valence electrons are used for bonding between two or more atoms For Example: Neon has a total of 10 e- The outer most energy shell for Neon in n2, therefore the 8 e- found in n2 are Neon’s valence electrons Neon has 8 ve- The first 2 e- are placed in n1 The remaining 8 e- are placed in n2

Lewis Dot Structure An atom’s valence electrons can be represented by a Lewis dot Structure. 1 valence e- X 2 valence e- 3 valence e- 4 valence e- 5 valence e- 6 valence e- 7 valence e- 8 valence e- All elements in Group 1 have 1 ve- All elements in Group 2 have 2 ve- All elements in Group 3A have 3 ve- All elements in Group 4A have 4 ve- All elements in Group 5A have 5 ve- All elements in Group 6A have 6 ve- All elements in Group 7A have 7 ve- All elements in Group 8A have 8 ve-

Li Be B C N O F Ne Learning Check #1 Draw the Lewis dot structure to represent the valence electrons for the following elements. lithium Li beryllium Be boron B carbon C nitrogen N oxygen O fluorine F neon Ne

Valence Electrons

Valence Electrons from E Con Pay attention to the HIGHEST energy level of the element and count the total electrons within that energy level: Example: 1s22s22p63s23p64s2 ___________ Example: 1s22s22p63s23p64s23d10 _________ Example: 1s22s22p6 ___________

Practice!!!! 1s22s2 ___________ 1s22s22p63s23p6 ___________ 1s22s22p63s23p64s63d104p5 ___________ 1s22s22p63s23p64s23d104p65s1 __________

Group 1A (alkali metals) have 1 valence electron

Group 2A (alkaline earth metals) have 2 valence electrons

Group 13 (3A) elements have 3 valence electrons

Group 14 (4A) elements have 4 valence electrons

Group 15 (5A) elements have 5 valence electrons

Group 16 (6A) elements have 6 valence electrons

Group 17 (7A) (halogens) have 7 valence electrons

Group 18 (8A) (Noble gases) have 8 valence electrons, except helium, which has only 2

Transition metals have 1 or 2 valence electrons

Lewis Dot Structure An atom’s valence electrons can be represented by a Lewis dot Structure. 1 valence e- X 2 valence e- 3 valence e- 4 valence e- 5 valence e- 6 valence e- 7 valence e- 8 valence e- All elements in Group 1 have 1 ve- All elements in Group 2 have 2 ve- All elements in Group 3A have 3 ve- All elements in Group 4A have 4 ve- All elements in Group 5A have 5 ve- All elements in Group 6A have 6 ve- All elements in Group 7A have 7 ve- All elements in Group 8A have 8 ve-

Li Be B C N O F Ne Learning Check #1 Draw the Lewis dot structure to represent the valence electrons for the following elements. lithium Li beryllium Be boron B carbon C nitrogen N oxygen O fluorine F neon Ne