The value of Z for an atom containing 47 protons,47 electrons,and 60 neutrons is
A)13.
B)47.
C)60.
D)107.
E)154.

Question

Quizplus · Accepted Answer

The atomic number (Z) is equal to the number of protons in an atom. Therefore, for an atom containing 47 protons, the value of Z is also 47. The number of neutrons (N) is equal to the mass number (A) minus the atomic number (Z). Therefore, N = A - Z or A = N + Z. Given that the atom contains 60 neutrons, we can calculate the mass number as follows: 
A = N + Z = 60 + 47 = 107. 
Therefore, the atom is an isotope of silver with an atomic number of 47 and a mass number of 107.

The Value of Z for an Atom Containing 47 Protons,47