The Ninth Amendment states, The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.” It was designed to work with the Tenth Amendment to reinforce limits on the federal government
The Ninth Amendment guarantees that the rights that are enumerated in the Constitution shall not be construed to deny or disparage others retained by the people, and the Tenth Amendment guarantees that the powers not delegated to the United States government by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people.
These Amendments are similar in the sense that they both prevent the federal government from expanding and from abusing of its authority, they both deal with issues that are not specifically mentioned elsewhere in the Bill of Rights and they guarantee some rights of the states and the people, even if they are not explicitly stated in the Constitution.
The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
