Answer:
16 neutrons.
Step-by-step explanation:
From the question given above, the following data were obtained:
Mass number = 30
Atomic number = 14
Neutron number =?
Next, we shall determine the number of protons present in the isotope. This can be obtained as follow:
The atomic number of an element is simply defined as the number of protons present in the atom of the element. Thus,
Atomic number = Proton number
Atomic number = 14
Therefore,
Proton number = 14
Finally, we shall determine the number of neutons present in the isotope as follow:
Mass number = 30
Proton number = 14
Neutron number =?
Mass number = Proton + Neutron
30 = 14 + Neutron
Collect like terms
Neutron = 30 – 14
Neutron = 16
Therefore, the isotope contains 16 neutrons.