How much is the Rutherford estimated the dimension of nucleus ?
In the nuclear reaction $_{92}{U^{238}}{ \to _z}T{h^A}{ + _2}H{e^4}$, the values of $A$ and $Z$ are
In helium nucleus, there are
If the mass number of an atom is $A = 40$ and its electron configuration is $1{s^2},\;2{s^2},\;2{p^6},\;3{s^2},\;3{p^6}$, the number of neutrons and protons in its nucleus will be
$1 a.m.u.$ is equivalent to
In the nucleus of ${ }_{11} N a^{23}$, the number of protons, neutrons and electrons are