How many neutrons are in the isotope ?

Question

How many neutrons are in the isotope  ?

Quizplus · Accepted Answer

The number 11 in the isotope's name refers to the number of protons in its nucleus (since it's the atomic number of the element). The mass number is not given in the name, but we can find it by adding the number of protons and neutrons together. The isotope symbol includes the mass number, so we can see that it is 146. Therefore, the number of neutrons is the difference between the mass number and the atomic number: 146 - 11 = 135.

How Many Neutrons Are in the Isotope