$1 a.m.u.$ is equivalent to
$1.6 \times {10^{ - 12}}Joule$
$1.6 \times {10^{ - 19}}Joule$
$1.5\, \times {10^{ - 10}}Joule$
$1.5 \times {10^{ - 19}}Joule$
The particles which can be added to the nucleus of an atom without changing its chemical properties are called
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion $A:$ The binding energy per nucleon is practically independent of the atomic number for nuclei of mass number in the range $30$ to $170$.
Reason $R$ : Nuclear force is short ranged.
In the light of the above statements, choose the correct answer from the options given below on
The atoms of same element having different masses but same chemical properties, are called
Isotopes are atoms having
Two protons exerts a nuclear force on each other, the distance between them is