Question

21. Electronegativity from left to right within a period and from top to bottom within a group.

a. stays the same, increases b. increases, stays the same c. decreases, increases d. increases, increases e. increases, decreases

22. The ICl-2 ion has valence electrons.

a. 34 b. 14 c. 8 d. 16 e. 36

25. Which of the following about pi bonds is NOT true?

a. The orbitals involved are above and below the plane of the other orbitals.

b. A sigma bond must form before there can be a pi bond.

c. They are formed from the p orbitals not used in forming sigma bonds.

d. Under certain circumstances their electrons can form an electric current.

e. All of these things are true.