Chemistry · Practical Inorganic chemistry (Qualitative Analysis)

JEE Main 2024 — 5 April, Shift 1 — Question 78

In a borax bead test under hot condition, a metal salt (one from the given) is heated at point $B$ of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is $\qquad$ BM (Nearest integer) [Given atomic number of $\mathrm{Cu}=29, \mathrm{Ni}=28$ , $\mathrm{Mn}=25, \mathrm{Fe}=26]$

Answer: 6

Numerical answer — enter this value.

Step-by-step solution

$\mathrm{Fe}^{+3}$ will give green coloured bead when heated at point $B$ .

Number of unpaired $\mathrm{e}^{-}$ in $\mathrm{Fe}^{+3}=5$ $\mu=5.92$

Nearest integer $=6$

Answer key and solution verified before publishing.

Practise Practical Inorganic chemistry (Qualitative Analysis)

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free

Exam: JEE Main 2024
Paper: 5 April, Shift 1
Subject: Chemistry
Chapter: Practical Inorganic chemistry (Qualitative Analysis)
Topic: Other Misc Reactions/ Tests