Chapter 2

Question 1

What is mass #

Answer 1

sum of neutrons and protons

Question 2

What is atomic #

Answer 2

of protons & electrons

Question 3

What is s?

Answer 3

1 orbital = 2 electrons

Question 4

What is p?

Answer 4

3 orbitals = 6 electrons

Question 5

What is d?

Answer 5

5 orbitals = 10 electrons

Question 6

What is f?

Answer 6

7 oribitals = 14 electrons

Question 7

What is the name for group 1?

Answer 7

Alkali metals

Question 8

What is the name for group 2?

Answer 8

Alkali Earth

Question 9

What is the name for group 17?

Answer 9

Halogens

Question 10

What is the name for group 18?

Answer 10

Nobel gases

Question 11

How are the orbitals arranged on the periodic table?

Answer 11

s, d, p, f (f is bottom)

Question 12

How many valence electrons do groups 1-18 have?

Answer 12

G1= 1 ve
G2 = 2 ve
G3-12 = varies
G14 = 4 ve
G15 = 5 ve
G16 = 6 ve
G17 = 7 ve
G18= 8 ve

Question 13

What is the trend for atomic radius? Why?

Answer 13

increasing downward from group, increasing from right to left
reason: increasing downward as energy levels increase
increasing from right to left because there are more electrons meaning more pull on the protons

Question 14

What is the trend for Ionization Energy? Why?

Answer 14

Increase from bottom to top for group. Increase from left to right.

reason: for increasing bottom to top because electrons are closer to nucleus and electrons are held more tightly so more energy to remove
reason: for left to right because more electrons added so more attraction