Question

Define valency in terms of hydrogen

Answer 1

The valency when defined in terms of hydrogen is the number of hydrogen atoms that can combine with or replace one atom of the element.

The Valency of Hydrogen is 1.

Answer 2

valancy means of the electrons on the last orbit. Therefore The atomic no. of Hydrogen is 1 and it has one orbit with 1 electron.So,the valancy of hydrogen is 1