Question

The ionization energy of elements in a period increases going from left to right.

• A. True
• B. False

Answer 1

The correct option is A True

1. Ionization energy is the minimum energy that an electron in a gaseous atom or ion has to absorb to come out of the influence of the nucleus.
2. Electrons are added to the same shell as we move from left to right in a period.
3. As the number of electrons and protons increases, so does the attraction, and atomic size decreases.
4. As a result, the electrons in the outermost shell become more tightly bound to the nucleus.
5. As a result, more energy is required to remove an electron from the outermost shell, and thus the ionisation energy rises.

Hence the given statement is true.