Which one has one unpaired electron in the valance shell?
Correct answer: C. Ti+3
- A. Zn+2
- B. Cu+
- C. Ti+3
- D. Fe+3
Explanation
Titanium has an atomic number of 22, and its electron configuration is [Ar]3d24s2[Ar] 3d^{2} 4s^{2}[Ar]3d24s2. Upon losing three electrons to become Ti³⁺, it loses the two 4s electrons and one 3d electron, resulting in [Ar]3d1[Ar] 3d^{1}[Ar]3d1. This means Ti³⁺ has one unpaired electron in its valence shell.
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