Question

task: nuclear fusion and nuclear fission
activity 3 of 5
for the isotope ( _{1}^{3}h ) the total number of protons is
choose
choose
of neutrons is

Explanation:

Step1: Recall the notation of isotopes

In the notation \(_{Z}^{A}X\), \(Z\) is the atomic number (number of protons) and \(A\) is the mass number (\(A=\text{number of protons}+\text{number of neutrons}\)). For \(_{1}^{3}H\), \(Z = 1\) (so the number of protons is \(1\)).

Step2: Calculate the number of neutrons

Using the formula \(N=A - Z\), where \(A = 3\) and \(Z = 1\). Then \(N=3 - 1=2\).

Answer:

The number of protons is \(1\) and the number of neutrons is \(2\).