Pick out the incorrect statement

Options

A. Red phosphorus consists of a complex chain structure and black phosphorus has a layer structure
B. Nitrogen shows a little tendency for catenation, because N-N single bond is very strong
C. The maximum number of covalent bonds formed atoby nitrogen is four, since it has no d-orbitals in its valence shell.
D. The group 15 elements do not form `M^(5+)` ions, but. +5 oxidation state is realized only through covalent bonding

Answer

B

Explanation

Nitrogen shows little tendency for catenation owing to weakness of N-N single bond.