Although nitrogen does not adsorb on iron surface at room temperature, it adsorbs on the same surface at 83 K. Which one of the following statement is correct?

Options

A. At 83 K, there is formation of monomolecular layer]
B. At 83 K, there is formation of multimolecular layer
C. At 83 K, nitrogen molecules are held by chemical bonds
D. At 83 K, nitrogen is adsorbed as atoms

Answer

B

Explanation

Multimolecular adsorption takes place at temperature 83 K.