Question

(i) Write the hydrides of Lithium and Beryllium.
(ii) What is the common name of the groups given below.
A. Group 2
B. Group 17

Answer 1

I) The hydride of lithium is lithium hydride (LiH) . Lithium hydride is ionic in nature.

The hydride of berrylium is berrylium hydride (BeH2) . It is covalent in nature and has 2center - 3 electron bond .

II)

A. The common name of group 2 is 'alkaline earth metals '.

They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

B. The common name of group 17 is 'halogens' .

This group consist of the elements - fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).