Question

Lithium is a metal with an oxidation number of 1+ and oxygen is a nonmetal with an oxidation number of 2-. which chemical formula represents the compound formed by these two elements?

a.li2o
b.li3o
c.lio
d.lio2

Answer 1

A is the correct answer every
lithium loses 1 electrons and every oxygen gains 2 electrons
so 2 atoms of lithium and 1 of oxygen are needed to form the compound
good luck

Answer 2

Answer: Option (a) is the correct answer.

Step-by-step explanation:

According to the cross multiplication method, charges present on the combining atoms cross multiply with the atoms in order to keep the molecule formed neutral.

For example, oxidation number of lithium is +1 and oxidation number of oxygen is -2.

So, when both of them chemically combine with each other then lithium atom will get multiplied by 2 whereas oxygen atom will get multiplied by 1.

Therefore, we can conclude that formula of this chemical compound will be
`Li_(2)O`.