number of neutrons = mass number - number of protons = 28 - 13 = 15 neutrons
15 neutrons
15.
61 neutrons.
How many protrons and neutrons does silicon have in the nucleus?
The isotope barium-140 has 84 neutrons.
The isotope carbon-12 has 6 neutrons.
There are 44 neutrons in 79Br and 46 neutrons in 81Br (the stable isotopes). Br is the chemical symbol of bromine.
After the beta decay of the isotope magnesium-28 the isotope aluminium-28 is formed. 28Al has 13 protons and 15 neutrons - the mass number is 28.
How many neutrons would it have if it had 11 neutrons? 11.
18 neutrons
60 neutrons.
There is no neutrons in Hitrogen.
117 neutrons.
It has 20 neutrons.
106 neutrons
61 neutrons 47 protons and 47 neutrons
30 neutrons for Na35Cl and 32 neutrons for Na37Cl .
28 neutrons
11 neutrons