What is the atomic number of an element having ns^1 electronic configuration and belonging to 3d transition series

MHT CET 2026 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2026

What is the atomic number of an element having ns electronic configuration and belonging to 3d transition series

(A)only 24
(B)only 25
(C)only 29
(D)24 and 29Correct

Answer: (D)

Solution

Within the 3d series (Sc to Zn) two elements have a outer configuration because of the extra stability of half-filled and fully filled d subshells. Chromium (Z = 24) is (half-filled d) and

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-097736