Hf2- is linear and
symmetrical, f-h-f- and has one of the strongest systems
of hydrogenbonding
a) draw atomic overlap representations for each of the sigma and
piorbitals of hf2-

b) draw oa mo energy level scheme for the molecule. place h atom 1s
orbital on left, fluorine 2s and 2p orbital (or the
appropriatesalcs) on right, and orbitals of hf2- in center.

c) given evergy level scheme derived in part b, would you
expecthf2- to be diamagnetic or paramagnetic

d) what is the h-f bond order in hf2-?

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Main expenses you plan on making payments on a new car too. you want to spend 15% of your monthly net pay on the car payment, insurance, registration, and taxes combined. what is your monthly car allowance? $149.46 $298.91 $448.37 $597.83

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)