an element y forms an oxide whosee chemical formula is y203.state the valency of y . write the chemical formula of sulphate and chloride
Answers
Sulphide =( so 4 ) 3
Chloride =ycl3
Valancy =3+
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Given: The element forms an oxide with the chemical formula Y₂O₃
To Find: The valency of Y
The formula of the sulfate and chloride of Y
Solution:
Oxygen has an atomic number 8. It has a 2,6 electronic configuration and requires 2 electrons to complete its octet. Oxygen forms O²⁻ and has a valency of 2
Chemical formula of a compound( Y₂O₃) = ( Element Y )(Valency of element O)(Element O)(Valency of element Y)
From this we can infer that the valency of Y is 3.
Sulphate is an anion that has a chemical formula SO₄²⁻. Its valency is 2
Chemical formula of a compound = ( Element Y )(Valency of Sulphate)(Sulphate)(Valency of element Y)
Chemical formula of a compound = Y₂(SO₄)₃
Chloride is formed when the chlorine atom gains an electron to form Cl⁻. Its valency is 1.
Chemical formula of a compound = ( Element Y )(Valency of Chloride)(Chlorine)(Valency of element Y)
Chemical formula of a compound = YCl₃
Therefore, the valency of Y is 3, the formula of its sulphate is Y₂(SO₄)₃ and the formula for its chloride is YCl₃.