Question

For d block elements the first ionization potential is of the order :
(a) Zn > Fe > Cu > Cr
(b) Sc = Ti < V = Cr
(c) Zn < Cu < Ni < Co
(d) V > Cr > Mn > Fe

Answer 1

the answer to this questions is

C

Answer 2

Answer:

(a) Zn > Fe > Cu > Cr is the correct answer. The first ionization energy of Zn is 906 KJ/mol, Fe is 759 KJ/mol, Cu is 745 KJ/mol and Cr is 650 KJ/mol.

Explanation:

What is first ionization potential:

• The first ionisation potential (IP1) is an atomic property that reflects the outermost electronic configuration.
• It is a measure of the energy necessary to remove one valence electron from a neutral atom.
• The ionization energy decreases from top to bottom in groups, and increases from left to right across a period.

Electronic configurations of:

1. Zn -3d¹⁰ 4s²
2. Fe - 3d² 4s2
3. Cu - 3d¹⁰ 4s¹
4. Cr - 3d⁵ 4s¹

From the electronic configuration we can understand the stability of those particles.