If the ouitermost shell of an atom can have maximum of 8 electrons,then how 4th period of modern periodic table have 18 elements?

Asked by Rajeev Kumar | 17th Mar, 2011, 12:00: AM

Expert Answer:

In the 4th period the no of subshell are 3 (s,p,d ) so it can contain 18 electrons.

Answered by  | 17th Mar, 2011, 10:09: AM

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