A quantity of aluminium has a mass of `54.0 g`. What is the mass of the same number of magnesium atoms ?.

Options

A. `12.1 g`
B. `23.3 g`
C. `48 g`
D. `97.2 g`

Answer

C

Explanation

Mole of `Al = ("wt")/("At wt")=(54)/(27)=2"mol"`
So wol of `Mg = ("wt")/(24)`
`"wt" = 2 xx 24 = 48 g` .