Geo-Scientist Prelims 2022 Chemistry Q33: Which of the following factors affect the ionization energy?

Which of the following factors affect the ionization energy?

1. Atomic size
2. Nuclear charge
3. Type of electrons involved

Select the correct answer using the code given below.

1. (a) 1 and 2 only
2. (b) 1 and 3 only
3. (c) 2 and 3 only
4. (d) 1, 2 and 3