Question

An element form an oxide y2o5 (a) what is the valency of the element y (b) what is the formula of the chloride of this element y

Answer 1

a) valency of element is 5
b) formula of the chloride YCl5.hope this will help you please mark as brain list answer.

Answer 2

a) The valency of the element y is +5.

b) The formula of chloride of this element y is $yCl_5$

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 y is having an oxidation state of +5 called as $y^{5+}$ cation and $O^{2-}$ is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral $y_2O_5$

For formation of chloride, $y^{5+}$ cation combines with $Cl^{-}$ anion with oxidation state of -1. They combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral $yCl_5$

Learn more about neutral ionic compound

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