Anita Paul, Seema Sinha, Karuni Subrahmanyam and, Deepika Parashari Solutions for Exercise 1: Put on your THINKING CAP!

The short form of the name of an element is

The valencies of two elements in a compound are  _____  to obtain the formula

Ozone is a _____ gas.

What is the valency of $\mathrm{Cl}$ in ${\mathrm{CaCl}}_2$?

Nitrogen is trivalent.

The symbol of iron is $\mathrm{I}$.

The valency of oxygen is $2$.

Atoms of an element form a compound.