Question

wat is hydrogen.................

Answer 1

Answer:

hydrogen is a gas having valency 1

Explanation:

Answer 2

Answer:

Hydrogen is a gas. It has symbol H. It has atomic number 1. so, it has valency 1 . It is a lightest element with atomic mass 1.008 ( approx. 1 ) Hydrogen is diatomic. hence, it always present as H2.

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