Which one of the following ion has similar electronic configuration like Ar?
Correct answer: B. Ti+4
- A. Sc+2
- B. Ti+4
- C. Cr+2
- D. Mn+6
Explanation
Titanium (Ti) has an atomic number of 22. If it loses 4 electrons to become Ti+4, its electronic configuration becomes: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁰ 4s⁰. This configuration is identical to argon's electronic configuration (1s² 2s² 2p⁶ 3s² 3p⁶). Therefore, Ti+4 is the correct answer as it has a similar electronic configuration to argon.
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