1.1 Alkuaineen suhteellinen atomimassa

4.
a) 14
b) 28, 29, 30
c) 14, 15, 16
d) \frac{92{,}23\cdot27{,}976927+4{,}67\cdot28{,}976495+3{,}10\cdot29{,}973770}{100}=28{,}0854...\approx28{,}1