26 protons
iron has 26 protons
Iron has 26 protons.
There are 26 protons in the atom of iron.
Iron-56 has 26 protons, 30 neutrons, and 26 electrons.
In the most abundant isotope of iron, there are 26 protons and 26 neutrons.
26
26 protons as its atomic number is 26
The number of protons in iron is 26. Its atomic number is also 26.
The atomic number of iron, its number of protons, and its number of electrons are each 26.
26
26
26