Atomic number of chromium is 24, then Cr3+ will be:
Correct answer: B. paramagnetic
- A. diamagnetic
- B. paramagnetic
- C. ferromagnetic
- D. none of these.
Explanation
Chromium (Cr) with an atomic number of 24 has an electronic configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵. When it loses three electrons to form Cr3+ (3+ charge), its electronic configuration becomes 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³. In this configuration, it has unpaired electrons in the 3d subshell, making it paramagnetic.
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