Subtract the mass from the number. Hydrogen's mass is just about 1, and it's obviously number 1 on the Table. Therefore, its nucleus has no neutrons.
The mass number of the most common hydrogen isotope, Hydrogen-1, is one
The atomic number of hydrogen is 1, which means that a hydrogen atom has one proton in its nucleus.
The atomic number for hydrogen is 1 and the atomic number for carbon is 6.
Hydrogen has an atomic number of 1, which means it has 1 proton in its nucleus. This is the defining characteristic of hydrogen as an element.
Hydrogen chloride is not an element; it is a compound and has no atomic number!
How many neutons in Berryllium?
For each isotope the number of neutrons is different.Number of neutrons = Mass number of an No isotope - 102
Isotopes
Sulfur is a non metal element. Mass number of it is 32.
the atomic number of hafnium is 72, protons? 72, neutrons? 106, electrons? 72
10
22
Common Isotopes of Carbon are 12C (6 neutrons), 13C (7 neutrons), and 14C (8 neutrons).
2 neutrons
9.1818 neutons
the nucleus
The mass number of the most common hydrogen isotope, Hydrogen-1, is one