Multiple choice

Which of the following sets represents only diamagnetic ions?

  1. Cu2+, Zn2+, Sc3+

  2. Zn2+, Sc3+, Ti4+

  3. Cu+, Mn2+, Cr3+

  4. Ni2+, Cu2+, Zn2+

  5. Cu+, Mn2+, Sc3+
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Zn2+: [Ar] 3d10 4s0; no unpaired electron; diamagnetic Sc3+: [Ar] 3d0 4s0; ; no unpaired electron; diamagnetic Ti4+: [Ar] 3d0 4s0; no unpaired electron; diamagnetic

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