Which one of the following ions is colourless

  • A

    $C{u^ + }$

  • B

    $C{o^{2 + }}$

  • C

    $N{i^{2 + }}$

  • D

    $F{e^{3 + }}$

Similar Questions

For the following Assertion and Reason, the correct option is

Assertion : For hydrogenation reactions, the catalytic activity increases from Group $5$ to Group $11$ metals with maximum activity shown by Group $7-9$ elements.

Reason : The reactants are most strongly adsorbed on group $7-9 $ elements.

  • [JEE MAIN 2020]

The ionic radius of $Cr$ is minimum is which of the following compounds

Bullet-proof steel alloy is prepared by using

Misch metal an alloy of

Which of the following set of elements does not belong to transitional elements set