Which of the following is correct? A) (⁸¹Br) has 35 protons, 35 electrons and 81 neutrons. B) (³⁴S) has 16 protons, 16 electrons and 16 neutrons. C) (⁴⁰Ar) has 18 protons, 18 electrons and 12 neutrons. D) (⁵⁹Co) has 27 protons, 27 electrons and 32 neutrons. E) (⁴⁸Ti) has 22 protons, 22 electrons and 24 neutrons.

Question

Quizplus · Accepted Answer

The atomic number of cobalt (Co) is 27, so it has 27 protons and 27 electrons. The mass number is 59, so it has 59 - 27 = 32 neutrons.

Which of the Following Is Correct