Question

The mass number of an atom containing 37 protons, 50 neutrons,and 37 electrons is:A)13B)50C)37D)87

Answer 1

The question requires us to determine the mass number of an atom with 37 protons, 50 neutrons and 37 electrons.

The atomic number of an atom is determined by its number of protons, while the mass number of an atom is defined as the sum of number of protons and number of neutrons.

Therefore, we can calculate for the atom given by the question:

`\begin{gathered} \text{mass number = number of protons + number of neutrons} \\ \text{mass number = 37 + 50} \\ \text{mass number = 87} \end{gathered}`

Therefore, the mass number of this atom is 87 and the best option to answer the question is letter D.