Two freshmen disagree about an aspect of chemistry.
The biology major insists that H is the symbol for hydrogen ion.
The physics major insists that H is the symbol for a proton.
How can you help them resolve their disagreement?

Both fishermen are wrong, H+ is the symbol for hydrogen ion and proton

Explanation:

Hydrogen H atom has one (1) proton and zero neutron in the nucleus and one (1) electron.

The biology major that said H is the symbol of Hydrogen ion is wrong because the correct symbol for Hydrogen ion is H+. Hydrogen ion has lost it one electron and has only one proton in it ionic form H+

The physics major that said H is the symbol for a proton is also wrong. The correct symbol of hydrogen proton with no neutron and electron is H+

Both fishermen should agree that H+ is the symbol for Hydrogen ion and the symbol for a proton.