Question

The equivalent mass of an element is 10 and its
chloride has vapour density 91, then valency of
element is
(1) 2
(2) 3
(3) 4
(4) 1​

Answer 1

Explanation:

chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table, and the f-block columns (between groups 3 and 4) are not numbered.