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

Chemistry 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?

  • XY
  • X2Y
  • XY2
  • X3Y2
  • X2Y3 checkmark

The correct answer is: 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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