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37.
Seaborgium has 12 isotopes; for the list of isotopes see the link below.
The isotopes 252Cf and 251Cf.
atomic number is 37
See the list of fermium isotopes at the link below.
Yes Neon has isotopes from 16-34.
The natural isotopes of copper are: Cu-63 and Cu-65.
All carbon isotopes have the same number of neutrons.
All carbon isotopes have the same number of neutrons.
The common isotopes of Rhodium are Rh-103, Rh-101, Rh-102, Rh-102m and Rh-99. They also happen to be stable. In addition to these isotopes, there are 30 other Rhodium isotopes.
The natural isotopes of nitrogen are: 14N with 99,634 % and 15N with 0,366 %.
The atoms of Carbon and Hydrogen that form butane, have isotopes. Carbon has isotopic masses of 12 , 13 & 14 Hydrogen has isotopic masses of 1,2 & 3. Theoretically the atomic mass using the heaviest isotopes is 4 x 14 + 10 x 3 = 86 However, this would be very rare, because Tritium ( H -3) is very rare and radio-active. The most common isotopic mass of butane is 4 x 12 + 10 x 1 = 58 NB Do not confuse isotopes with molecular mass. Isotopes of an element are atoms of that element with a different number of neutrons, thereby giving atoms of that element a different mass.