An atom's atomic number gives its number of protons. Zirconium's atomic number is 40. Thus it has 40 protons in each atom, regardless of isotope.
52.
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
45 neutrons