Question

an atomic number of iron is 26 and atomic mass is 56. how many protons and electrons and neutrons an iron atom have

Answer 1

number of proton=atomic number so its number of protons are 26 and proton =elctron=26.number of neutrons=mass number-atomic number so 56-26=30

Answer 2

Iron has 26 protons, 26 electrons and 30 neutrons.

• The atomic number of an atom is defined as the number of protons present in it.
• Hence the number of the proton is 26.
• Again the number of the proton is the same as the number of electrons so, the number of electrons in iron is 26.
• The mass number of an atom is the sum of the number of protons and the number of neutrons.
• The mass number of iron is 56.
• Hence the number of the neutron is 56-26=30.