What is the total number of protons and neutrons in the nuclide #""_35^80Br#?

1 Answer
Jun 10, 2017

Answer:

Well, there are #"45 neutrons"#...........

Explanation:

The atomic number, #Z#, of bromine is #35#. And thus the subscript in #""_35^80Br# is quite superfluous.......because the symbol #Br# specifies #35# nuclear charges........

We write #""^80Br#. Because the superscripted mass number is equal to the SUM of nuclear protons and neutrons, the number of neutrons is equal to #80-Z=80-35=45# #"neutrons.........."#

If you are unclear as to how I did this problem, come again and someone will help you. This really is a simple principle, and if it seems difficult it is only because it is unfamiliar.