10
H   12.00  1.0079
He  10.95  4.0026
C    8.08  12.011
N    7.88  14.007
O    8.41  15.999
Na   3.30  22.990
Mg   3.85  24.305
Si   3.90  28.086
S    4.90  32.066
Fe   3.48  55.845