group-2 element

The reaction of which of the following groups 2 elements with oxygen is used to start a thermite reaction with A1?

The atomic size of elements of group 2 compared to group 1 element are

Group 18 ( or zero group) elements are also called as :

Representative elements or main group elements are called:

Chalcogen group elements are .

The valency of group 16 elements 2 .

Assertion : Acidity of hydrides of group 16 elements increases down the group. Reason : Electronegativity of these elements increases down the group.