Which is not unique to each element?
a. proton number
b. atomic number
c. neutron number
d. chemical symbol

your answer is D

This is because each element has its own atomic number and it doesnt repeat. Same with the protons and neutrons, thats what makes it special.

But the symbol has nothing to do with the element and can be used to represent any other element.

Hope this helps you out!!

:)))

change tension

the higher the current the higher the mag field around it the higher the influence on the compass