An atom of 131_{I contains ________ neutrons.} A) 53 B) 184 C) 78 D) 124 E) 131

Name: An atom of 131 I contains ________ neutrons. A) 53 B) 184 C) 78 D) 124 E) 131
Brand: Quizplus
Rating: 4.8 (33 reviews)

Question

Quizplus · Accepted Answer

The number of neutrons in an atom is found by subtracting the atomic number (number of protons) from the mass number. For 131I (Iodine), the atomic number is 53 (indicating 53 protons), and the mass number is 131. Therefore, the number of neutrons = 131 - 53 = 78.

An Atom of 131I Contains ________ Neutrons.

An Atom of 131_{I Contains ________ Neutrons.}