Question

What is the atomic number (Z) and mass number (A) of an element with 8 protons, 8 electrons, and 10 neutrons? a. Z = 8, A = 16 b. Z = 8, A = 18 c. Z = 10, A = 8 d. Z = 16, A = 8

Answer 1

B

Step-by-step explanation:

the proton and electrons have the same number as Z so its 8.

To find the neutrons we have to subtract A with the protons. so x-8=10.

18-8=10 neutrons

therefore, the answer is B.