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Question

Name the element having only one shell and one valence electron.

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Solution

Group 1 elements have just one valence electron. Hydrogen, lithium, and sodium, as group 1 elements, have just one electron in their outermost shells. They are unstable as single atoms, but can become stable by losing or sharing their one valence electron. Among this Hydrogen is the element having only one shell and one valence electron.


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