CBSE Class 9 Answered
an element X forms the following compounds with hydrogen, carbon, and phosphorous:P2X3, P2X5, H2X2, H2X, CX2, CX. find the valencies of X and other element present in the compound.
Asked by R.S.CHAUHAN | 08 Mar, 2016, 08:32: PM
Expert Answer
P2X3:
Valency of P = 3
Valency of X = 2
P2X5:
Valency of P = 5
Valency of X = 2
H2X2:
Valency of H = 1
Valency of X = 2
H2X:
Valency of Hydrogen = 1
Valency of X = 2
CX2:
Valency of C = 4
Valency of X = 2
CX: (C≡X)
Dative bond is present in between C and X
Valency of of C = 2
Valency of X = 2
In all the compounds given above the valency is 2.
Hence Element X is Oxygen as it shows valency 2
Answered by Vaibhav Chavan | 09 Mar, 2016, 09:46: AM
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