There are ________ electrons, ________ protons, and ________ neutrons in an atom of Xe.

Question

There are ________ electrons, ________ protons, and ________ neutrons in an atom of  Xe.

Quizplus · Accepted Answer

The atomic number of Xe is 54, which tells us the number of protons present in its nucleus. electrons are equal to the number of protons, so there are also 54 electrons in the atom. The mass number of Xe, which is the sum of protons and neutrons present in its nucleus, is 131.9 rounded to 132. Therefore, the number of neutrons in the atom is 132 - 54 = 78. Choice D provides these values.

There Are ________ Electrons, ________ Protons, and ________ Neutrons in an Atom

There Are Electrons, Protons, and Neutrons in an Atom