Subrata Kumar Choudhury and Jibananda Paul Solutions for Chapter: Atomic Structure; Physical and Chemical Properties of Matter, Exercise 1: EXERCISE

Calculate the amount of nuclear charge on Sodium atom.

Why the chemical properties of an element depend on its atomic number?

Can an element have more than one nuclide? Justify with example.

Why the nucleus of an atom is heavy and positively charge?

State the relation between mass number and atomic number of an atom.

State the number of fundamental particles in ${\mathrm{S}}^{2-}$ ion.

A neutral atom of an element has $2\mathrm{K}, 8\mathrm{L}$ and $5\mathrm{M}$ electrons. State its atomic number, number of protons and valency of the element.

How many electrons can be accommodated in $\mathrm{M}$ shell? Give electronic distribution of ${\mathrm{Ca}}_{20}$.