JEE Main 2026 — Jan 24, Shift 2 — Chemistry solution

JEE Main2026Jan 24, Shift 2Chemistry

"X" is an oxoanion of the lightest element of group 7 (in the periodic table). The metal is in +6 oxidation state in "X". The color of the potassium salt of X is

A
green
B
purple
C
yellow
D
orange

Solution

The lightest element of group 7 (transition metals) is Mn. An oxoanion of Mn with the metal in $+ 6$ oxidation state is the manganate ion $MnO_{4}^{2 -}$ .

The potassium salt is $K_{2} MnO_{4}$ , which is green.

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