Answers

2016-03-04T17:37:15+05:30
Given, element X has valency 3.The valency of oxide O is 2.
On interchanging the valency, we get,Therefore the formula of its oxide will be X2O3.
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2016-03-04T17:40:19+05:30
Compound 'X' has valency 3 and 'O' has valency 2 . L.C.M of 3 & 2 is 6 .
For X = 3 * = 6
For O = 2 * 3 = 6
Therefore  X_{2}O_{3} is the formula of oxide of 'X'
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