The number of atoms in 0.1 mol of a triatomic gas is ( A N =6.022×10 ) (CBSE AIPMT 2010)

Given, Avagadro number ( A N ) = 23 6.023 10 x 1 mol of a compound contains 1 Avogadro number of molecules Then 0.1 moles of compound contains 22 6.022 10 x molecules ---- (1) Number of atoms in one triatomic molecule = 3--- (2) Therefore, the number of atoms in 0.1 moles of a triatomic gas = 22 22 23 6.022 10 3 18.066 10 1.8066 10 atoms x x x x