Answer
In a Carbon-12 atom , there are:
$\Longrightarrow$ 6 protons
$\Longrightarrow$ 6 neutrons
$\Longrightarrow$ $6$ $electrons$, assuming that the atom is neutral,
In a Carbon-14 atom, there are:
$\Longrightarrow$ 6 protons
$\Longrightarrow$ 8 neurons
$\Longrightarrow$ 6 electrons, assuming that the atom is neutral.
Work Step by Step
Carbon has atomic number = Z = 6
Since number of protons = atomic number,
Number of protons in both Carbon-12 and Carbon-14 are same, and = 6.
Also, when the atom is neutral, number of protons = number of electrons ( Since the positive and negative charges on protons and electrons respectively are equal and thus cancel out each other).
Thus number of electrons of both Carbon-12 and Carbon-14 are = 6
In a Carbon-12 atom , Mass number = A = 12.
Thus number of neutrons = A - Z = 12 - 6 = 6
Thus number of neutrons in Carbon-12 atom = 6
In a Carbon-14 atom, Mass number = A = 14.
Thus, number of neutrons = A - Z = 14 - 6 = 8
Thus number of neutrons in Carbon-14 atom = 8
