Question

*Electronic configuration of chromium, having atomic number 24, is:*

1️⃣ [Ar]3d⁴4s²
2️⃣ [Ar]3d⁶4s⁰
3️⃣ [Ar]3d⁵4s¹
4️⃣ None of these

Answer 1

Answer:

3

Explanation:

in order to get stability cr and cu fill their respective 3d orbitals completely and then fill 4 s orbitals

Answer 2

Answer:

electronic configuration of chromium is [AR]3d5 4s1

after vanadium the electronic configuration of chromium must be [AR] 3d4 4s2

but half filled or fully filled orbitals are more stable than ground electronic configuration

so 4s2 electron jump into 3d orbital so it's configuration would be

[AR] 3d5 4s1

option (C)

hope it helps ...