an element x belongs to 3rd period and group 16 of the modern periodic table
(a)determine the number of valence electron and the valency of x
(b)molecular formula of the compound
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Valence electrons 6.
Valency 2
Valency 2
Answered by
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Answer:
Given :
X belongs to period 3rd and group 13th.
Atomic number of X is 13.
Electronic configuration of X
= > 2 , 8 , 3
a ) .
Valance electron in 'X' is 3 .
Valency is 3 as it denote 3 electron to become stable.
b ) .
Given :
Atomic number of Y is 8
Electronic configuration of Y :
= > 2 , 6
Valency of Y is 2 as it need 2 electron to become stable.
Molecular formula X with Y is as :
X Y
3 2
= > X₂Y₃
c ) .
Valency of X = 3
Valency of Cl = 1
Molecular formula of X with Cl :
X Cl
3 1
= > XCl₃
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