Question

Why ions have completely filled outermost shell? Explain.​

Answer 1

Answer:

An atom of Na has a total of 11 electrons. Its electronic configuration is 2, 8, 1. But, Na+ ion has one electron less than Na atom i.e. it has 10 electrons. Therefore, 2 electrons go to K-shell and 8 electrons go to L-electrons, thereby completely filling K and L shells.

Answer 2

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➦If atoms of elements, have a completely filled outermost shell then their combining capacity or valency is zero.

As after completely filled shell its stable so nonreactive.

Explanation:

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