nuclear symbols

Question

Give the nuclear symbol (isotope symbol) for the isotope of bromine, Br, that contains 46 neutrons per atom.

Replace the question marks with the proper integers. If necessary, use the button that looks like two red arrows to clear your changes and return the answer box to its original state.

Answer 1

Br has atomic # = 35 = 35 protons

# of neutrons = 46

protons + neutrons = mass #

35 + 46 = 81

From the above atomic and mass numbers, you should now be able to write the nuclear symbol for Br-81.