mass number
The sum of protons and neutrons in an atom is called mass number.
Sum of protons and neutrons is the Mass number of the element. The number of protons is equal to the number of electrons. Neutrons and protons are sub atomic particles.
Mass number = Protons+Neutrons
The sum of the number of protons and neutrons in an atom
Mass number!:)
The sum of protons and neutrons is the atomic mass.
the mass number
atomic number is the number of protons. the sum of protons and neutrons is known as mass number
No. The number of neutrons has no affect on the number of protons and electrons.
By the sum of protons and neutrons we obtain the mass number of the atom which is written at the top of the atom periodic number. We can also obtain the mass number by adding the atomic number and the number of neutrons because the atomic number and the number of protons are same. You know that scientists have discovered some particles which are smaller than protons and neutrons and these are known as quartz.
The mass number is the sum of protons + neutrons.
The mass number