Question

An element Z with zero valency is a metal /noble gas/ nonmetal

Answer 1

Answer:

Noble gas.

VALENCY TELLS US ABOUT THE COMBINING CAPACITY OF AN ELEMENT. SINCE IT IS ZERO THEREFORE THE ELEMENT IS NOT REACTIVE AND THIS IS ONLY TRUE FOR NOBLE GASES.

Answer 2

Answer:

nobel gas

Explanation:

They are in 18 th group with no outermost electrons..

They don't react with any other metal in the periodic table..

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