Question

an atom contains 18 electrons in outermost shell and 18 electrons in penultimates shell find the atomic no. of that atom​

Answer 1

Answer:

Active atoms tend to complete the number of electrons according to octet rule or duplet rule. The key difference between octet and duplet is that octet is an atom or an ion having a maximum of eight electrons in the outermost shell while duplet is an atom having the maximum of two electrons in the outermost shell

Explanation:

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