Question

The elements which have only one electron in outermost s orbital​

Answer 1

$\huge\tt{Answer}$

The elements in Group 1 (lithium, sodium, potassium, rubidium, cesium, and francium) are called the alkali metals. All of the alkali metals have a single s electron in their outermost principal energy.

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Answer 2

Answer:

Lithium, sodium and potassium