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
B.
Nitrogen
Nitrogen (N) differs from rest of the members of group 15 elements (P, As, Sb, Bi), because of its small size, high electronegativity, high ionisation energy, absence of vacant d-orbitals and capacity to form p = p multiple bonds N ≡ N.
The colour and magnetic nature of manganate ion (MnO) is
green, paramagnetic
purple, diamagnetic
green, diamagnetic
purple, paramagnetic