Complete the following table.
Sl. No | Name of the element | Symbol | Mass number | Atomic number | Number of protons | Number of electrons | Number of neutrons |
1 | ____ | 24 | ____ | ____ | ____ | 12 |
Definition of atomic number.
Atomic number is defined as the number of protons present inside the nucleus of an atom.
Atomic number = number of protons = number of electrons
Definition of mass number.
Mass number is defined as the sum of number of protons and number of neutrons present inside the nucleus of an atom.
Mass number = number of protons + number of neutrons.
In given mass number = 24, number of neutron = 12
Therefore atomic number = 12
Atomic number = number of protons = number of electrons
Hence number of protons =12 and number of electrons = 12
Sl. No | Name of the element | Symbol | Mass number | Atomic number | Number of protons | Number of electrons | Number of neutrons |
1 | Magnesium | 24 | 12 | 12 | 12 | 12 |