Periodic trends

The electronic configuration of aluminium is

• 2.3

• 2.2.3

• 2.2.8

• 2.8.3

An element X is in period 4 and group 5 , it has

• 5 shells and 5 valence electrons

• it has 4 shells and 4 valence electrons

• it has 4 shells and 5 valence electrons

• none of the above

The electronic configuration of an element is 2,8,5

• its a non-metal

• its a metal

• its a metalloid

• None of the above

An element has 5 electrons in its last shell it becomes an ion by (a)   electrons

An element has 2 electrons in its last shell, it becomes an ion by (a)   electrons

The name of the family in group 8 is

• halogens

• noble gases

• alkali metals

• alkaline earth metals

• Transition metals

The name of family in group 2 is

• Halogens

• Noble gases

• Alkali metals

• Alkaline earth metals

• Transition metals

The name of the family in group 1 is

• Halogens

• Noble gases

• Alkali metals

• Alkaline earth metals

• Transition metals

Metalloids have the properties of

• Metals

• Non- Metals

• Halogens

• Noble gases

The reactivity of group 1 metals (a)   going down the group.