Composition of the nuclei of two atomic species X and Y are given as under
X Y
Protons = 6 6
Neutrons = 6 8
Give the mass numbers of X and Y. What is the relation between the two species?
Answer
|
X |
Y |
|
|
Protons |
6 |
6 |
|
Neutrons |
6 |
8 |
|
Mass number of an atom = Number of protons + Number of Neutrons |
6 + 6 = 12 |
6 + 8 = 14 |
- Protons of X = Protons of Y
- So, Atomic number of X = Atomic number of Y
- Mass number of X ≠ Mass number of Y
Elements having the same atomic numbers but different mass numbers are called isotopes and have the same electronic configuration and chemical properties.
Therefore, X and Y are isotopes.
