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