Priyanka B Solutions for Chapter: Atoms and Molecules, Exercise 1: Multiple Choice Questions MCQs

Atomicity of metals is taken as:

Atomic number of sodium is $11, {\mathrm{Na}}^{+}$ will have

Atomic number of chlorine is 17, ${\mathrm{Cl}}^{-}$ will have

Which of the following represents $0.5$ mole of water?
(i) $18$ g of water
(ii) $9$ g of ${\mathrm{H}}_2\mathrm{O}$
(iii) $6.022 \times {10}^{23}$ molecules of water
(iv)$3.011 \times {10}^{23}$ molecules of water

Which of the following will weigh the highest?

Which of the following will have maximum number of atoms

The correct statement about atoms is:

The number of atoms in ${{\mathrm{CO}}_3}^{2-}$ is