Question

the first ionization potentials of Be and B respectively are

1. 8.29,8.29

2. 9.32,9.32

3. 8.29,9.32

4. 9.32, 8.29

Answer 1

berrylium have more IP than boron so ans is 4

Answer 2

Answer: The correct answer is Option 4.

Explanation:

Ionization potential is defined as the amount of energy required to remove an electron from outermost shell.

This energy will be higher for fully filled and half-filled electronic configuration than partially filled electronic configuration.

Beryllium is the 4th element of the periodic table having electronic configuration of = $1s^22s^2$

This element has fully filled 's'-orbital. Thus, first ionization potential will be higher.

Boron is the 5th element of the periodic table having electronic configuration of $1s^22s^22p^1$

This element has partially filled 'p'-orbital. Thus, first ionization potential will be lower.

Both the elements will not have same value of ionization potential because both have different atomic numbers.

Thus, from the given options, the correct option will be 4 only because beryllium will have higher numerical value of ionization potential than boron.