REVIEW QUESTIONS

 Protons, neutrons, and electrons in the Phosphorus ion? P = 15, e=18, n=16

 Protons, neutrons, and electrons?  Aluminum ion P= 13, e= 10, n= 14

 Explain whether or not this element is chemically reactive:  1s 2 2s 2 2p 3  What ion will this element form? Reactive but not as reactive since it has five valence electrons This element will form a -3 anion

 Explain whether or not the following element is reactive or not: 1s 2 2s 2 2p 6 3s 2 3p 6 Not reactive. Full valence electrons – stable octet

 What is the symbol and charge for the ions of the following elements:  CaS  RbBr  AlN Ca 2+ S 2- Rb + Br - Al3 + N 3-

The following elements lose an electron to be like what noble gas. What charge will each form: 1) K 2) O 3) Rb 4) P 5) Ca 1)Argon – K + 2)Ne – O 2- 3)Krypton – Rb + 4)Argon – P 3- 5)Argon – Ca 2+

What are two things you know about transition metals? 1)They form cations 2)Some can form more than 1 stable cation

How are an ion and its parent atom similar? Both have the same number of protons!!!!!!!

 How are ions and their parent atoms different? Chemical reactivity Different number of electrons Different electron configurations Different stabilities

 The measure of the strength of an ionic bond is known as what?????? Lattice energy

 State whether energy is being inputted or released: 1)Going from a solid to a gas 2)Removing an electron 3)Ionic bond formation 4)An element gaining an electron 5)Splitting an diatomic element like Cl 2 Endothermic: 1,2, 5 Exothermic:3,4

 What are the properties of ionic compounds High melting and boiling point Crystalline structure Hard Brittle Soluble Electrical conductivity when dissolved in water or molten

 What do the roman numerals tell us? Give an example! The roman numerals tell us the charge of the ion. For example III means +3 charge.

 State the octet rule The tendency of atoms of elements to gain or lose electrons so that their outer s and p orbitals are filled with eight electrons.

 What is the general formula for an ionic compound? Metals form cations (lose electrons) Non-metals form anions (gain electrons)

 The crystal structure of a salt depends on what 2 things? Size and ratio of the cations and anions Charge of the cations and anions

 Write the formula for the following compounds: Potassium dichromate Calcium Nitrate Copper (II) Sulfate K 2 Cr 2 O 7 Ca(NO 3 ) 2 CuSO 4

 Write the names of the following ionic compounds:  CuCH 3 COO  Ca 3 N 2  KMnO 4 Copper (I) Acetate Calcium Nitride Potassium Permanganate

Hg(NO 3 ) 2 (NH 4 ) 3 PO 4 Al(ClO4) 3 Mercury (II) Nitrate Ammonium Phosphate Aluminum Perchlorate

 Tin (IV) Sulfate  Cobalt (III) Cyanide  Iron (II) Hydroxide Sn(SO 4 ) 2 Co(CN) 3 Fe(OH) 2