Question

What are valency shell ??
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Answer 1

Answer:

The last shell of an atom is valance shell.

Explanation:

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Answer 2

Explanation:

What are valency shell ?

Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na). Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr).

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What is the importance of the valence shell?

Valence electrons are the electrons that reside in the outermost electron shell of an atom in the highest energy level. They are important to an atom because the fewer valence electrons that the atom holds, the less stable it becomes.

an electron of an atom, located in the outermost shell (valence shell ) of the atom, that can be transferred to or shared with another atom.

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