Electronic configuration of Cr³⁺ (Z = 24):
A[Ar] 3d⁴
B[Ar] 3d³
C[Ar] 3d⁵
D[Ar] 3d⁵ 4s¹
Answer & Solution
Correct answer: B. [Ar] 3d³
Cr: [Ar] 3d⁵ 4s¹. Cr³⁺: lose 4s and two 3d → [Ar] 3d³. Three unpaired electrons. Paramagnetic.
Related questions
In the photoelectric effect, the kinetic energy of ejected electrons is:The electronic configuration of Cr (Z=24) is an exception, written as:By the AUFBAU principle, the 3d subshell starts filling:Hund's rule states that electrons in degenerate orbitals:Heisenberg's uncertainty principle is most accurately stated as:The de Broglie wavelength of a particle with momentum p is:The BALMER series of hydrogen corresponds to electron transitions ending at:The energy of the nth orbit in a hydrogen atom (Bohr's model) is: