2.2 Group 2 Metals

Question 1

What are the ions that the group 2 metals form

Answer 1

2+

Question 2

How does atomic radius change as you go down group 2

Answer 2

Atomic radius increases as you go down group 2, due to additional electron shells

Question 3

How does reactivity change as you go down group 2

Answer 3

Reactivity increases as you go down group 2, as there is more shileding, less nuclear attraction and therefore the outer electron is easier to lose.

Question 4

How does first ionisation energy change as you go down group 2

Answer 4

First ionisation energy decreases as you go down group 2, greater atomic radius and increased shielding decreases nuclear attratcion to ourer electron therefore easier to lose

Question 5

How does melting point change as you go down group 2

Answer 5

Melting point decreases as you go down group 2, because the electrostatic attraction gets weaker as the ion becomes larger

Question 6

What are the products when you react group 2 with water

Answer 6

Group 2 + Water = metal hydroxide + hydrogen

Question 7

What will the metal hydroxide product form as

Answer 7

as alkaline solution

Question 8

How does solubility of their hydroxides change as you go down group 2

Answer 8

Solubility increases down the group

Question 9

What is the most soluble and least soluble group 2 hydroxde

Answer 9

Magesium Hydroxde = least soluble
Barium Hydroxide = most soluble