The number of atoms presentin 0.1 mole of `P_(4)` (at mass = 31) are

Options

A. `2.4 xx 10^(23)` atoms
B. same as in 0.05 mole of `S_(8)`
C. `6.02 xx 10^(22)` atoms
D. same as in 3.1 g of phosphorus

Explanation

a) `therefore` 1 mole of `P_(4)` contains phosphorus atoms
`=4 xx 6.02 xx 10^(23)`
`therefore` 0.1 mole of `P_(4)` contains phosphorous atoms
`=4 xx 6.02 xx 10^(23) xx 0.1`
`=2.4 xx 10^(23)`atoms