Midterm Review 2

Question 1

P-type semiconductor

Answer 1

Has an additional element that has one less electron than the semiconductor (in the boron column to the left), so the additional element accepts an electron

Question 2

N-type semiconductor

Answer 2

Has an additional element that has one more electron than the semiconductor (in the phosphorus column to the right), so the additional element donates an electron

Question 3

Exceptions for electron configurations

Answer 3

4th and 9th column transition metals gain electrons in d before filling s

Transition metals lose s before d

Question 4

f level for electron configurations

Answer 4

Don’t forget that there are 4-5 f levels when writing electron configurations 6s and below

Question 5

2 group hybridization

Answer 5

Hybridization: sp
Shape: Linear
Hybridized orbitals: sp (x2)
σ bonds: 2
Unhybridized 2p orbitals: 2
π bonds: 2

Question 6

3 group hybridization

Answer 6

Hybridization: sp2
Shape: Trigonal planar
Hybridized orbitals: sp2 (x3)
σ bonds: 3
Unhybridized 2p orbitals: 1
π bonds: 1

Question 7

4 group hybridization

Answer 7

Hybridization: sp3
Shape: Tetrahedral
Hybridized orbitals: sp3 (x4)
σ bonds: 4
Unhybridized 2p orbitals: 0
π bonds: 0

Question 8

Metal oxides make good…

Answer 8

Basic oxides

Question 9

Nonmetal oxides make good…

Answer 9

Acidic oxides

Question 10

How is a molecule affected when there is resonance?

Answer 10

It is stabilized because the charge is delocalized (spread out)