Ionic Bonding Flashcards
1
Q
Does NaCl conduct electricity ?
A
Only when melted (when it’s solid, ions can’t move to conduct)
2
Q
Exponent # of ions usually corresponds with what ?
How to tell sign ?
A
- group # (like # of bonds formed)
- to the right of C is positive; to the left: negative
3
Q
Practice: Ions
exponent for K ?
S ?
Al ?
A
K^+1
S^-2
Al^+3
4
Q
How to find formula for ionic compounds ?
A
If different exponents, put exponent of 1st to the bottom of 2nd and the one of the 2nd to the bottom of 1st
(Cs+ & S2- = Cs2 S
5
Q
What’s the periodic trend of Lattice energy ?
A
Increases across, decreases down
6
Q
How to calculate lattice energy ?
A
7
Q
What is the most likely formula for the ionic compound formula b/w magnesium and chloride ?
A
MgCl2
8
Q
What moves around to conduct electricity: ions or atoms ?
A
ions
9
Q
How to calculate formal charge ?
A
valence electrons - (bonds + dots ON CENTRAL ATOM)
