3.2.6 (1) Group 2 - The Basics

Front 1

The group two elements:

1) Known as?

2) They're often used to?

Back 1

1) The alkaline Earth Metals.

2) Neutralise acids.

Front 2

Trends:

1) The atomic Radius?

Back 2

1) Increases as you go down the group, as the number of electron shells increases and these also have repulsion between them.

Front 3

Trends:

1) The melting points?

Back 3

1) Decrease down the group due to weaker metallic bonding - the electrostatic forces of attraction between the sea of delocalised electrons and the protons in the nucleus.

Front 4

Mg's melting point:

Back 4

Is lower than the other group 2 elements due to its crystalline structure.

Front 5

Trends:

1) First ionisation energy?

– Because?

Back 5

1) Decreases down the group.

– As the atomic size increases, the attraction between the 2 outer electrons and the protons in the nucleus decreases.

Front 6

Trends:

1) The reactivity of the group 2 elements?

– Because?

Back 6

As the atomic size increases, the outer electrons are more easily lost making them good reducing agents.