Chemistry

2. A neutral group of atoms joined together by covalent bonds
4. rule: Atoms react by gaining or losing electrons so as to acquire the stable electron structure of noble gas, usually 8 valence electrons
7. exclusion principle: An atomic orbital may describe at most 2 electrons, each with opposite spin direction
10. The ability of an atom to attract electrons when the atom is in a compound
12. bond: A force of attention that holds metals together
13. Rule: electrons occupy orbitals of the same energy in a way that makes the number or electrons with the same spin direction as large as possible

1. the electrostatic attraction that binds oppositely charged ions together
3. a bond formed by the sharing of electrons between atoms
5. state: A atom, molecule, or ion with an electron in a higher than normal energy level than it's ground state
6. gas configuration: an electron structure of an atom or ion in which the outer electron shell contains eight electrons
8. state: the lowest possible energy of an atom described by quantum mechanics
9. law: when the elements are arranged in order of increasing atomic number
11. principle: The rule that electrons occupy the orbitals of the lowest energy first