There are ________ protons,________ neutrons,and ________ electrons in ¹³¹I^-. A)131, 53, 54 B)131, 53, 52 C)53, 78, 54 D)53, 131, 52 E)53, 78, 52

Question

Quizplus · Accepted Answer

Iodine (I) has an atomic number of 53, meaning it has 53 protons. The isotope 131I has a mass number of 131, so it has 131 - 53 = 78 neutrons. The negative charge indicates an extra electron, so it has 54 electrons.

There Are ________ Protons,________ Neutrons,and ________ Electrons in 131I-

There Are Protons, Neutrons,and Electrons in ¹³¹I^-