Unit 8

Question 1

ENC (Effective Nuclear Charge)

Answer 1

The amount of

Question 2

How is ENC affected as you move from Left to Right on the periodic table?

Answer 2

The ENC increases because there are more protons creating a stronger pull and no extra shields

Question 3

How is ENC affected as you move from Top to Bottom on the periodic table?

Answer 3

The ENC decreases because there are more electron shields creating a greater distance to

Question 4

Electron Shielding Left to Right

Answer 4

Stays the same because there are no extra energy levels

Question 5

Atomic Radius

Answer 5

The size of an atom, the distance between the nucleus and valence electrons

Question 5

Electron Shielding Top to Bottom

Answer 5

Increases because you are adding energy levels

Question 6

Atomic Radius Left to Right

Answer 6

Decreases because there is greater ENC

Question 7

Atomic Radius Top to Bottom

Answer 7

Increases because there is more electron shielding

Question 8

Ionization energy

Answer 8

The energy required to remove an electro

Question 9

Ionization Energy Left to Right

Answer 9

Increases because there is a greater ENC

Question 10

Ionization Energy Top to Bottom

Answer 10

Decreases because there are more electron shields

Question 11

Electron Affinity

Answer 11

How likely an atom gains valence electron

Question 12

Electron Affinity Left to Right

Answer 12

Increases because there is more ENC

Question 13

Electron Affinity Top to Bottom

Answer 13

Decreases because there is more electron shielding

Question 14

Which has a larger effect ENC or shields

Answer 14

shields

Question 15

How do you calculate ENC?

Answer 15

of protons - # of non-valence electrons

Question 16

Electronegatibin

Answer 16

Rjw amounf of force pulllin on shared electron bonds

Question 17

Electronegativity range for non polar covalent

Answer 17

0-0.5

Question 18

polar covalent

Answer 18

0.6-1.6

Question 19

ioninc

Answer 19

1.7 +