- Created by: scarletto_266
- Created on: 20-01-20 09:27
Trends in the properties of elements in Period 3
The elements in group 1-2 (sodium, magnesium and aluminium) are metals. They have giant structures , they lose their outer electron to form ionic compounds.
Silicon - In group 4, forms four covalent bonds. It has some metallic properties so is classed as a semi-metal.
The elements in group 5-7 (Phosphorus, sulfur and chlorine) are non-metals, they can accept electrons to form ionic compounds or share electrons to form covalent compounds.
Argon - is a noble gas, it has a full outer shell of electrons so is very unreactive.
Study note - When a molecular substance melts, the covalent bonds…