45 is the atomic mass of the atom. And the name is Scandium
Answer: 1.31 × 10^47 sorry if its not the answer
Explanation:
Atomic mass iron ( Fe ) = 55.84 a.m.u
55.84 g ------------ 6.02x10²³ atoms
24.0 g ------------- ??
24.0 x ( 6.02x10²³) / 55.84
=> 2.58x10²³ atoms