Exam 4 (Final)

Question 1

Network Covalent Solids

Answer 1

Melting point depends on bond energies

Question 2

Ionic Solids

Answer 2

MP depends on lattice energy

Question 3

Molecular solids

Answer 3

MP depends on IMF

Question 4

Metallic Solids

Answer 4

MP depends on strength of metallic bonding

Question 5

conduction band

Answer 5

electrons move freely

Question 6

valence band

Answer 6

electrons are held still

Question 7

donor impurities

Answer 7

provide conduction electron n-type negatively charged (extra electron)

Question 8

acceptor impurities

Answer 8

electron deficient p-type positively charged (one electron less)

Question 9

Hydration energy

Answer 9

Released when a mole of ion dissolves in a large amount of water

Higher the charge, higher the hydration energy

Similar charge, smaller the ion, higher the hydration energy

Question 10

Reactivity

Answer 10

Highest at each end of periodic table exclusing noble gases

Question 11

d-orbital atom exceptions

Answer 11

Chromium (Cr)

Molybdenum (Mo)

Palladium (Pd) [Kr]4d¹⁰

Copper (Cu)

Silver (Ag)

Gold (Au)

Question 12

Coordination compound

Answer 12

one complex ion and positively charged counter ions

central metal cation surrounded by ligands

counter ions maintain charge neutrality

Question 13

Coordination number

Answer 13

Number of lone pairs the metal receives

Question 14

Coordination compound geometry

Answer 14

C.N. = 2 Linear

C.N. = 4 Square planar or tetrahedral

C.N. = 6 octahedral

Question 15

en

Answer 15

No charge

bidentate

Question 16

ox

Answer 16

bidentate

Question 17

EDTA

Answer 17

hexadentate

4- charge

Question 18

Weak/low field ligans

Answer 18

high spin (small Δ) in the CFT

Ususally diamagnetic

Question 19

Strong field ligans

Answer 19

low spin (high Δ) in the CFT

Usually diamagnetic

Question 20

ROY absorbed field strength

Answer 20

Weak

Question 21

GBV absorbed field strength

Answer 21

Strong

Question 22

Alpha radiation

Answer 22

Weakest

Cannot penetrate several sheets of paper and clothing

Question 23

Beta radiation

Answer 23

Medium weakest

Cannot penetrate past living bons and living tissue

Question 24

Alpha (emission)

Answer 24

⁴₂à

+2 charge

Question 25

Beta (negatron emission)

Answer 25

⁰_-1ß^-1 -1 charge

Question 26

Beta (positron emission)

Answer 26

⁰₁ß⁺¹ +1 charge

Question 27

Atomic number higher than 83

Answer 27

Alpha emission

Question 28

n/p \< 1

Answer 28

positron emission

Question 29

n/p \> 1

Answer 29

negatron emission