10.1+2.58+1.2=13.88
t+258=9A258 t=267
For Md-258 isotope, there are 157 neutrons (258 - 101 = 157; atomic number = 101)
258 plus 963 = 1221
2.58+13.35=15.95 258+1335=1593
856 + 258 = 1114
155 + 258 = 413
16.062378404209011 x 16.062378404209011 = 258
258 hectares equates to 637.5 acres.
3940
999.
258 is.
258