Question

An element x has valency 2 .Write the chemical formula of its nitrate and chloride. Is element x metal or non metal

Answer 1

They have asked us to write the formula with nitrate chlorine which are anions

So x is a cation

X is a metal as it lost electrons to form positive charge

Answer 2

The chemical formula of its nitrate and chloride are $x(NO_3)_2$ and $xCl_2$. Element x is a metal.

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here element x is having an oxidation state of +2 called as $x^{2+}$ cation and $NO_3^{-}$ is an anion with oxidation state of -1. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral nitrate $x(NO_3)_2$

Here element x is having an oxidation state of +2 called as $x^{2+}$ cation and $Cl^{-}$ is an anion with oxidation state of -1. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral chloride $xCl_2$

Element x is a metal as it has formed an ionic bond with non metals.

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