Core Periodicity IV: Physical Properties

Core Periodicity: Physical Properties

Slide 14 of 35

5. Melting Point: Trend Across Period 3

Trend across is to increase until, in the case of period 3, silicon for example, and then to decrease (see data table).

Going down group I and II it decreases, while down group VII it increases as would be expected.

The explanation has to do with bonding and structure (see also Core Bonding: Chemical Bonds for more details).