In the formation of magnesium chloride (by direct combination between magnesium and chlorine), name the substance that is oxidized and the substance that is reduced.

Which of the following is not a common characteristic of an electrovalent compound ?

What are the term defined by the following :
A bond formed by a shared pair of electrons, each bonding atom contributing one electrons to the pair.

What are the term defined by the following :
A bond formed by a shared pair of electrons with both electrons coming from the same atom.

Select the correct alternative from the choices given:

Among the following the one which is composed of all the three kinds of bond (ionic, covalent and coordinate bond) is: