Answer:
The atomic number this isotope is 18.
The atomic mass this isotope is 38.
Explanation:
Atomic number(Z) = Total numbers of protons
Mass number (A) = Total number of protons(Z) + Total number of neutrons(N)
A = Z + N
We have :
Number of protons in a nucleus of a given atom of an isotope, Z= 18
Number of neutrons in a nucleus of a given atom of an isotope, N= 20
A = Z + N = 18 + 20 = 38
The atomic number this isotope is 18.
The mass number this isotope is 38.
