How many electrons, protons, and neutrons are in a neutral atom of the following isotope of krypton ${ }_{36}^{84} \mathrm{Kr}$
A) 36 electrons, 48 protons, and 36 neutrons
B) 84 electrons, 24 protons, and 36 neutrons
C) 36 electrons, 36 protons, and 48 neutrons
D) 36 electrons, 36 protons, and 84 neutrons
E) None of the above are correct

Question

Quizplus · Accepted Answer

The atomic number for krypton is 36, so a neutral atom of krypton will have 36 electrons and 36 protons. The given isotope has a mass number of 84, which is the sum of the protons and neutrons in the nucleus. Therefore, the number of neutrons is 84 - 36 = 48. Choice C matches these numbers, with 36 electrons, 36 protons, and 48 neutrons.

How Many Electrons, Protons, and Neutrons Are in a Neutral 3684Kr{ }_{36}^{84} \mathrm{Kr}3684​Kr

How Many Electrons, Protons, and Neutrons Are in a Neutral ${ }_{36}^{84} \mathrm{Kr}$