Question

State whether the following statements are true or false.
The element with the atomic number 17 has the least size among all the elements of that period.

• A. True
• B. False

Answer 1

The correct option is A True

1. The size of an atom depends on the distance between the valence shell and the nucleus i.e., atomic radius.
2. As we move left to right in a period, the number of electrons in the same shell increases.
3. Hence, the effective nuclear charge increases.
4. Element having group 17 is Chlorine. It lies in the right corner of the periodic table.
5. Hence, it has the least atomic size in its respective period.