Question

The mass of a single atom of an element $M$ is $3.5\times {10}^{-23}g$. What is its atomic mass? What could the element be?

Answer 1

$Atomicmass=massofsingleelement\times avogadronumber$

$Atomicmass=3.5\times {10}^{-23}\left(given\right)\times 6.023\times {10}^{23}$

$=21.08unit$