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What is the formula of the ionic compound formed by the elements lithium and oxygen?

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the formula is Letter A) Li2O

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Answer: The chemical formula for the compound of lithium and oxygen will be
Li_2O

Step-by-step explanation:

Ionic bond is defined as the bond which is formed when complete transfer of electrons takes place from one atom to another atom.

Lithium is the 3rd element of the periodic table with electronic configuration of
1s^22s^1

This element looses 1 electron and shows an oxidation state of +1.

Oxygen is the 8th element of the periodic table with electronic configuration
1s^22s^22p^4

This element will gain 2 electrons and shows an oxidation state of -2.

By criss-cross method, the oxidation state of oxygen becomes the coefficient of lithium and that of lithium becomes of oxygen.

Hence, the chemical formula for the compound obtained by the combination of lithium and oxygen is
Li_2O

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