Answer
Deuterium nucleus: 1 proton and 1 neutron.
Carbon nucleus: 6 protons and 6 neutrons.
Iron nucleus: 26 protons and 30 neutrons.
Gold nucleus: 79 protons and 118 neutrons.
Strontium nucleus: 38 protons and 52 neutrons.
Uranium nucleus: 92 protons and 146 neutrons.
Work Step by Step
The number of protons is the atomic number, the subscript preceding the element name.
The number of neutrons is the atomic mass number minus that.
