Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
KCET2013Chemistryd and f Block Elements

Which one of the following shows highest magnetic moment?

Options

  1. AFe ²⁺
  2. BCo ²⁺
  3. CCr ³⁺
  4. DNi ²⁺

Correct answer

A. Fe ²⁺

Step-by-step solution

The paramagnetism or magnetic moment produced due to spin of electrons or unpaired electrons is expressed in terms of Bohr magneton (BM) or _ B and given by Magnetic moment ( )= [n(n+2)] BM where n is the number of unpaired electrons, in species. Thus, greater is the number of unpaired electrons in an ion greater is its paramagnetic nature. As Fe ²⁺ ion has maximum number of unpaired electrons, thus it has highest magnetic moment.

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Pick out the correct option Assertion(A): Mercury is not considered as a transition element Reason (R): Mercury is a liquid 2026Which of the following does not correctly represent the order of the property indicated against it? 2026The element with the highest third ionisation enthalpy is: 2026The product and its colour when MnO₂ is fused with KOH in presence of O₂ : 2026The ion that has a spin only magnetic moment of 5.9 BM is: 2026Which one of the following species will impart colour to an aqueous solution? 2026The basic character of transition metal monoxides follows the order: 2026K ₂ Cr ₂ O ₇ on heating with aqueous NaOH gives ------------------------- 2026 Full d and f Block Elements list All KCET PYQs