Unit 2 Vocab

2. a variation of an element that possesses the same atomic number but a different mass number
4. The property of any rotating object given by moment of inertia times angular velocity
9. the electrons in the outermost shell, or energy level, of an atom
12. a three dimensional description of the most likely location of an electron around an atom
14. the total number of protons an nuetrons in an atom
15. the electrons orbit the nucleus of an atom
16. the total mass of the particles of matter in an atom
17. opaque, lustrous elements that are good conductors of heat and electricity
18. a particle which is smaller than an atom in size
19. fixed distances from the nucleus of an atom where electrons may be found.

1. describes the angular momentum of an electron
3. a chemical element that exhibits some metal and some nonmetal properties
5. a chemical element
6. determines the number of orbitals and the orientation of orbitals in a given sub-shell
7. a column in the periodic table of the chemical elements
8. a horizontal row of the periodic table
10. A grouping of electrons in a shell according to the shape of the region of space they occupy
11. A grouping of electrons in an atom according to energy.
13. the number of protons in the nucleus of eahc atom of that element