Question:

Write two algebraic equations relating the number of protons and neutrons in an atom to that atom's atomic mass and atomic number:

Where,

• P = Number of protons
• N = Number of neutrons
• A = Atomic mass
• Z = Atomic number

Answer:

A = P + N
Z = P

Where,

• P = Number of protons
• N = Number of neutrons
• A = Atomic mass
• Z = Atomic number