Question

the atomic number of an element 'x' is 20. write 1) its valency 2) whether it is a metal or non metal ​

Answer 1

Answer:

1) 2

2) Metal

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Answer 2

Answer:

1) Since it has 2 valence electrons in its valence shell and it will lose 2 electrons to gain nearest stable gas configuration. So, the valency of X is 2

2) Since it loses electrons to gain inert gas configuration, so it is a non-metal.

Explanation:

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