Hocus Pocus
What is the least electronegative atom? Most electronegative atom?
Least: Francium
Most: Fluorine
How many bonds can hydrogen form? Why?
1 bond; 2 electrons
Which is more polar covalent: PF3 or SF2?
PF3
What is the definition of an isomer?
Compounds with identical molecular formulas but different bonds forming the compound.
Arrange the bonds in increasing bond length: single bond, double bond, triple bond.
triple, double, single
Which compound has the highest lattice energy? BaO, NaI, LiBr, MgO, & CaS
MgO
What's the formal charge of bromine in BrCl3?
0
In the first resonance structure, the formal charge of carbon is 0 and the formal charge of nitrogen is 0. In the second resonance structure, the formal charge of carbon in -1 and the formal charge of nitrogen is 1. Which one is the more stable isomer? Why?
The first one, because the most stable isomer is the one whose atoms have a formal charge of 0.
What kind of bond is between the 2 carbons in C2H4?
Double Bond
How many resonance structures are possible for the nitrate ion?
3
Calculate the bond energy change for the following rxn: (Look at chart from previous activity)
H2 + Cl2 -> 2HCl
-184 kJ/mol
What are the formal charges of phosphorous and hydrogen in PH3?
P:0
H: 0