Question

Hydrogen should be placed in which group and which period? Give reasons.​

Answer 1

Answer:

Hydrogen should be placed in group 1 as it has valency 1 a tendency to reject an electron and donate one; and period 1 as it has K shell level.

Explanation:

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Answer 2

hydrogen should be placed in group 1 as it has valency 1 a tendency to reject an electron and donate one and period 1has K shell level

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