Answer:
(D) is the correct option.
Step-by-step explanation:
Molar mass of NO = (14+16) g/mol = 30 g/mol
Molar mass of NO₂ = (14+16×2) g/mol = 46 g/mol
Molar mass of N₂O = (14×2+16) g/mol = 44 g/mol
Molar mass of N₂O₅ = (14×2+16×5) g/mol = 108 g/mol
Number of moles = mass/molar mass
mass = n × M, M = molar mass
n = 1 mol in each case
Higher the molar mass, greater is the mass of the compound. The molar mass of N₂O₅ is greatest of all other cases. It will have greatest mass.