Chemistry, asked by anishadavid3199, 9 months ago

Explain why hydrogen(having valency 1)is placed in group 1(having valency 1)- alkali metals and not in group 17(having valency 1)- halogens

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Answered by neha7122

2

Answer:

hydrogen is placed in group 1 because it is the only element which do not fill any shell

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