Question

(i) Write electron-dot structures for magnesium and oxygen.
(ii) Show the formation of MgO by the transfer of electrons.
(iii) What are the ions present in this compound ?

Lakhmir Singh Chemistry Class 10

Answer 1

Explanation:

1. Images is attached below

2. There are six electrons in the valence shell of oxygen. Hence, there is two shortage of electron in oxygen. In magnesium, there is two oxygen in valence shell of oxygen. Hence, the two magnesium electrons are given to the oxygen ion. The type of bond is an electrovalent or ionic bond. This is because the valency of the compound is +2 and -2.

3. There are two ions involved in the reaction. The cation is $M g_{2}+$ and the anion is $O_{2}-$