Question

3. Can a particular shell has just one electron? Explain. . ​

Answer 1

Explanation:

Element X can lose only one electron which is the outer most electron and so it has valency 1. If it is removed then the number of electrons is one less than the number of protons so there is one proton extra than electron. So a one positive charge is created.

Answer 2

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The Question is Give below 

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Element X can lose only one electron which is the outer most electron and so it has valency 1. If it is removed then the number of electrons is one less than the number of protons so there is one proton extra than electron. So a one positive charge is created.