Carbon dioxide consists of atoms of these two elements.

Q.

In carbon dioxide, the ratio of carbon atoms to oxygen atoms is always:

Q. Statement-1: An atom having a valency of two can combine with two other atoms, each having a valency of one.

Statement-2: The valency of carbon in carbon dioxide $\left(C{O}_2\right)$ is two.

Q. The exhaled air consists of a higher percentage of carbon dioxide. Justify with the experiment.

Q. Fill in the blanks choosing the correct word from those given below.
one, two, carbon, oxygen, compound(s), element(s), gas, symbol, formula, atom(s), molecule(s)
CO₂ is the _______________ of a gas called carbon dioxide, It represents one ___________ of the _______________. This compound is made up of ______________and _______________. Each molecule contains one ______________ of carbon and _________________of _______________. The _____________ C represents one ______________ of while the _______________ O represents one ________________ of ______________.

Q. Atomic orbitals of carbon in carbon dioxide are: