group 2 elements

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

identify the group 2 element 'X' in each of the following (i) The chemistry of X is quite different from that of other element in the group. (ii) 'X' forms organometallic compound RXBr. Which is very widely used?

A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

The valency of group 16 elements 2 .

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

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

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