See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

  6 18 Fe Ar 3d n 4      5 18 Mn Ar 3d n 5      4 18 Cr Ar 3d n 4      8 18 Ni Ar 3d n 2    Since,   s n n 2 BM   Fe and Cr   will have same s . For More Material Join: @JEEAdvanced_2025 AITS-FT-II-PCM(Sol.)-JEE(Main)/2025 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 10