Question

the mass of a single a atom of an element M is 3.15×10^-23 g.what is its atomic mass? what the element could be?

Answer 1

Mass of one mole
$= 3.15 \times {10}^{ - 23} \times 6.023 \times {10}^{23} = 19g$
Atomic Mass= 19amu
The element is thus fluorine.