Question

Which of the following statements regarding the variation of atomic radii in the periodic table is not true?

• A. In a group, there is continuous increase in size with increase in atomic number.
• B. In 4f-series, there is a continuous decrease in size with increase in atomic number.
• C. The size of inert gases is larger than halogens.
• D. In $3^{rd}$ period, the size of atoms increases with increase in atomic number.

Answer 1

Answer: (D)

Size of atoms decreases with increase in atomic number in a period.