if an element X with atomic number 13 combines with an element Y whose atomic...

NECO 2001

if an element X with atomic number 13 combines with an element Y whose atomic number is 8 the most likely formula of the compound formed between X and Y is?

A. XY
B. X₂Y
C. XY₂
D. X₃Y₂
E. X₂Y₃

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Correct Answer: Option E

Explanation

Element X is aluminum of valency 3+

Element Y is oxygen of valency 2-

Their combination is \(Al_{2}O_{3}\)

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if an element X with atomic number 13 combines with an element Y whose atomic...

Correct Answer: Option E

Explanation

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