Science, asked by vikramarajbhar5, 6 months ago

4. How many elements are there in the first, second,
third and fourth periods?

Answers

Answered by viramrajbhar22

1

Explanation:

Ans -

1. Period -2

2. Period -8

3. Period -8

4. Period -18

hope it's helpful

Answered by dansinghrana9313

4

Answer:

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