JEE Main 2014 · 9 Apr · Shift 1 · Chemistry Q50

ChemistrySingle correct+4 / -1Question 50 of 90

The correct statement about the magnetic properties of $\ce{[Fe(CN)6]^3-}$ and $\ce{[FeF6]^3-}$ is : ( $Z=26$ ).

both are paramagnetic.

both are diamagnetic.

\ce{[Fe(CN)6]^3-}

is diamagnetic,

\ce{[FeF6]^3-}

is paramagnetic.

\ce{[Fe(CN)6]^3-}

is paramagnetic,

\ce{[FeF6]^3-}

is diamagnetic.

Answer and worked solution

Official answer: A

$\ce{Fe^3+}$ is $d^5$ .

Both are paramagnetic.

Topics:Crystal field theory Magnetic properties and colour

JEE Main 2014 · 9 Apr · Shift 1, Chemistry question 50