DEFINITIONS Flashcards
Define Isotope
Atoms of the same element with different numbers of neutrons and different masses
Define Relative isotopic mass
The mass of an isotope compared with 1/12th of the mass of carbon-12
Define Relative atomic mass
The weighted mean mass compared with 1/12th of the mass of carbon-12
What is a Shell?
A group of atomic orbitals with the same principle quantum number, n
What is the Atomic number?
The number of protons in the nucleus of an atom
What is the Mass number?
The sum of the number of protons and neutrons in the nucleus
What is an Ion?
A positively or negatively charged atom or group of atoms
What is a Cation?
A positively charged ion
What is an Anion?
A negatively charged ion
What is a Binary compound?
A compound containing two elements only
What is a Polyatomic ion?
An ion containing more than one atom
What is a Diatomic molecule?
A molecule containing two atoms bonded together
