Chemistry, asked by ap592676, 2 months ago

period 2 and 3 contains eight elements each but others period have different numbers of elements.give reason

Answers

Answered by sujatha4uharitha

Explanation:

According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.

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