Question

Give one-word answer

(a) How does the atomic size vary in going from $Na$ to $Cl$ in the periodic table?

Answer 1

The atomic size vary in going from $Na$ to $Cl$ in the periodic table Because:

• The atomic number of the elements grows, the size of atoms reduces as we proceed from sodium $\left(Na\right)$ to chlorine $\left(Cl\right)$ in the third period.
• In the same way, the number of electrons and protons in the atom grows.