Question

The group with valency zero
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Answer 1

Answer:

Group 18 elements have zero valency because the outermost shell of these electrons are complete and form a stable electronic configuration. They are non reactive elements. These elements are also known as noble gases. The elements are helium, neon, argon, krypton, xenon and radon.

Explanation:

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Answer 2

Answer:

Explanation:Group 18 elements have zero valency because the outermost shell of these electrons are complete and form a stable electronic configuration. ... These elements are also known as noble gases. The elements are helium, neon, argon, krypton, xenon and radon.