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An Element X Forms the Following Compounds with Hydrogen, Carbon and Oxygen : - Science

Answer in Brief

An element X forms the following compounds with hydrogen, carbon and oxygen :

H2X, CX2, XO2, XO3

State the three valencies of element X which are illustrated by these compounds.

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Solution

H2X:

Element / Ion H X

        Valency  1  2

To stabilize the compound with hydrogen, two atoms of X are required. Therefore, the valency of X in this compound will be two.

CX2:

Element/ Ion    C    X
     Valency        4     2

To stabilize the compound with carbon, two atoms of X are required. Thus, the valency of X in this compound is two.

XO2:

Elements / Ion      X   O
    Valency             4   -2

To stabilize this compound with oxygen, four atoms of X are required. Thus, the valency of X in this compound is four.

XO3:

Elements/ Ion  X  O
      Valency      6  -2

To stabilize this compound with oxygen, six atoms of X are required. Thus, the valency of X in this compound  is six.

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APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Hots Questions | Q 47 | Page 153
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