if an element X with atomic number 13 combines with an el...
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
Correct answer is E
Element X is aluminum of valency 3+
Element Y is oxygen of valency 2-
Their combination is Al2O3
Diamond does not conduct electricity because it? ...
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Hydrogen can be displaced from a hot alkaline solution by ...
Which of the following pairs of solutions will produce a precipitate when mixed? ...
The group IA metals are not found free in nature because they ...
The number of atoms in one mole of a substance is equal to? ...
Which of the following statements about an equilibrium system is correct? ...