Live relationshipA=Z+NA = Z + N
Atom builder. Neutron count at 54 . Protons + neutrons 80 nucleons, Mass number 56 nucleons. Currently protons + neutrons is over by 24 nucleons.ATOM BUILDERTUNINGNUCLEUS54

Protons + neutrons

80nucleons

Mass number

56nucleons

54

Atom builder. Neutron count at 54 . Protons + neutrons 80 nucleons, Mass number 56 nucleons. Currently protons + neutrons is over by 24 nucleons.

Narrative feed

You arrive at an isotope scanner checking a shipment of shielding plate.

The plate should be iron-56: 26 protons, mass number 56. The neutron count on the readout is wrong, so the scanner flags it as counterfeit.