Periodic Trends

Question 1

What happens to the atomic radius and ionization energy when the attraction between the electron and a nucleus are high?

Answer 1

The atomic radius is low while the ionization energy is high

Question 2

What happens to the atomic radius and ionization energy of an atom when the attraction is low?

Answer 2

The atomic radius is high while the ionization energy is low.

Question 3

What does moving left to right across the period do?

Answer 3

Atomic radius decreases, ionization energy increases

Question 4

What happens when you move down a group?

Answer 4

Atomic radius increase and ionization energy decreases.

Question 5

What happens when a cation is formed?.

Answer 5

The attraction increases, so the atomic radius decreases and the ionization energy increases.

Question 6

Whit happens when an anion is formed?

Answer 6

The attraction decreases, so the atomic radius increases and the ionization energy decreases

Question 7

What is electron affinity? R

Answer 7

The energy either gained or released when an electron is added to an atom

Question 8

When is ea a negative number?

Answer 8

When energy is released

Question 9

When is ea a positive number?

Answer 9

When energy is required

Question 10

What groups have the most negative electron affinities?

Answer 10

Halogens

Question 11

What group has the most positive electron affinities?

Answer 11

Group 2/ alkali earth metals