PF_(3) is known while NF_(5) is not known, why? , 11 | Chemical bonding and molecular structure. CH...

PF_(5) is known but NF_(5) is not known. Discuss.

Chemical Bonding - Molecular Orbital Theory (3)

(a) PF_5 is known, but NF_5 is not. Why ? (b) The experimentally determined N-F bond length in NF_3 is greater than the sum of single convalent radii of N and F .

Give reasons for the following (a) PF_(5) is know but NF_(3) is not (b) H_(2)O is a good solvent (c ) BF_(3) is non- polar but planar (e) Carbon -oxygen (C-O) bond lengths are equal in Na_(2)CO_(3) (f) MgF_(2) is more soluble in water than MgCI_(2) .