Question

What do the symbol $\text{'}\mathrm{A}\text{'}$ represent?

Answer 1

• The symbol $\text{'}\mathrm{A}\text{'}$represents the mass number of an element.
• The number of protons and neutrons combine to give us the mass number of an atom.
• As both protons and neutrons are present in the nucleus, therefore known as nucleons.
• Example-In ${}_6{\mathrm{C}}^{12}$, A= 12