Question

An element X consists of 7 electrons in its valence shell (M shell). What is the
valency of the element X?

Answer 1

Answer:

Its atom contains 9 protons.

Its atoms can accept one electron to acquire noble gas configuration.

Answer 2

Answer:

It has 7 electrons in its M shell..

So it needs more 1 electron to complete its octate or to attain its octate state..

Therefore,the valency of the element is 1..

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