Question

Write out the relative atomic mass of the first 20 elements

Answer 1

H-1 g

He-4 g

Li-7 g

Be-9 g

B- 10 g

C- 12 g

N-14 g

O-16 g

F-19 g

Ne-20 g

Na-23 g

Mg-24 g

Al-27 g

Si-28 g

P-31 g

S-32 g

Cl-35.5 g

Ar-40 g (39.94)

K-39 g

Ca-40 g