The number of atoms in 0.1 mol of a triatomic gas is:

Options

A. `1.806 xx 10^(23)`
B. `3.600 xx 10^(23)`
C. `1.800 xx 10^(22)`
D. `6.026 xx 10^(23)`

Answer

A

Explanation

Number of atoms
= number of moles `xx N_(A) xx` atomicity
`= 0.1 xx 6.02 xx 10^(23) xx3`
`= 1.806 xx 10^(23)` atom