1.

Composition of the nuclei of two atomic species X and Y are given as under{:(,X,Y),("Protons "=,6,6),("Neutrons "=,6,8):}Given the mass number of X and Y. What is the relation between the species ?

Answer»

SOLUTION :Mass number of X = Number of PROTONS + Number of NEUTRONS
`=6+6`
= 12
Mass number of Y = Number of Protons + Number of
Neutrons. `= 6+8=14`
These two ATOMIC species X and have same atomic number but different mass number. Hence they are ISOTOPES.


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