Multiple choice

The correct electronic configuration and spin-only magnetic moment of Fe3+ (at.no. 26) are

  1. [Ar]3d8 and 2.9 BM, respectively

  2. [Ar]3d5 and 5.9 BM, respectively

  3. [Kr]4d5 and 5.9 BM, respectively

  4. [Kr]3d8 and 2.9 BM, respectively

  5. [Ar]3d64s2 and 4.9 BM, respectively
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct answer is: 26Fe: [Ar]3d6 4s2 Fe3+: [Ar]3d5 

Keep practicing — related questions