Calculate the number of protons and neutrons in the nucleus of atoms of the following elements

| June 22, 2021 | education

Calculate the number of protons and neutrons in the nucleus of atoms of the following elements, knowing their ordinal number and atomic masses: Na, P, Ar, Al, Fe, Pb

An atom is the smallest particle of matter, consisting of a nucleus and electrons moving in the near-nuclear space.
A neutron is an elementary particle that has no charge. Together with the protons, it forms the nucleus of the atom, around which the electrons move.
To calculate the number of protons, it is necessary to subtract its ordinal number from the relative mass of a chemical element.
For Na, the number of protons is 11 and the number of neutrons is 12.
For P, the number of protons is 15 and the number of neutrons is 16.
For Ar, the number of protons is 18 and the number of neutrons is 22.
For Al, the number of protons is 13 and the number of neutrons is 14.
For Fe, the number of protons is 26 and the number of neutrons is 30.
For Pb, the number of protons is 82 and the number of neutrons is 125.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.