An element X has a valency of 3 .what is the MOLECULAR FORMULA OF ITS OXIDE .
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al2o3 aluminum oxide
ROHIT9998887:
there are much elements with valency 3
r u sure that it. will only be aluminum
but Al is less reactive than any other metals and it also placed lower in electoral chemical series
yes I'm sure
oh i don't know about it actually
it's okay
Answered by
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If the formula of oxide is X2O3. It means oxidation state of element is +3.(criss cross method).That is element has tendency to loose 3 electrons from valence shell. Chlorine has tendency to gain one electron. 3 electrons lost by the element will gain by 3 chlorine atoms.So it will form a compound with chlorine having formula XCl3.
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