JEE Main 2021 Chemistry question

In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment ? (i) (ii) (iii) (iv)

• (A)(i) > (iii) > (iv) > (ii)Correct
• (B)(ii) > (iii) > (i) > (iv)
• (C)(iii) > (iv) > (ii) > (i)
• (D)(ii) > (i) > (iii) > (iv)