Question

6 what does the left superscript in the following notation represent? * (0.5 points) the mass number the number of protons the number of electrons the number of neutrons

Explanation:

In chemical notation, the left - hand superscript represents the mass number of the atom or ion. The mass number is the sum of protons and neutrons in the nucleus. Here, for $^{36}_{17}Cl^{1 -}$, 36 is the mass number.

Answer:

The mass number