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Name (a) three elements that have a si...

Name
(a) three elements that have a single electron in their outermost shells.
(b) two elements that have two electrons in their outermost shells.
(c) three elements with filled outermost shells.

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(a) Lithium (Li), Sodium (Na),and potassium (K) have a single electron in their outermost shells.
(b) Magnesium (Mg) and Calcium (Ca) have two electrons in their outermost shells.
(c ) Neon(Ne) argon (Ar), and nexon (Xe) have filled outermost shells.
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NCERT ENGLISH-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
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