What is the geometry of molecule of bromine penta fluoride?
Square planar
Trigonal bipyramidal
Squre pyramidal
Octahedral
Select a ferromagnetic material from the following.
Dioxygen
Chromium (IV) oxide
Benzene
Dihydrogen monoxide
Which element among the following does form p - p multiple bonds?
Arsenic
Nitrogen
Phosphorus
Antimony
The colour and magnetic nature of manganate ion (MnO) is
green, paramagnetic
purple, diamagnetic
green, diamagnetic
purple, paramagnetic
A.
green, paramagnetic
Oxidation state of Mn in MnO is +6.
Mn(+6) = 1s2 2s2 2p6 ,3s2 3p6 3d1, 4s0
Hence, manganate ion is paramagnetic due to presence of unpaired electron. Also, it is green in colour.