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What is the ionic formula for lithium oxide?
The ionic formula for Lithium Oxide is ##Li_2O##.
Lithium is an Alkali Metal in the first column of . This means that lithium has 1 valence electron it readily gives away in order to seek the stability of the octet. This makes lithium a ##Li^(+1)## cation.?
Oxygen is in the 16th column or ##p^4## group. Oxygen has 6 . It needs two electrons to make it stable at 8 electrons in its valence shells. This makes oxygen a ##O^(-2)## anion.
Ionic bonds form when the charges between the metal cation and non-metal anion are equal and opposite. This means that two ##Li^(+2)## cations will balance with one ##O^(-2)## anions.
This makes the formula for lithium oxide ##Li_2O##
I hope this is helpful. SMARTERTEACHER