Unit 4 Vocab Flashcards Preview

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Flashcards in Unit 4 Vocab Deck (14):
1

the arrangement of electrons in an atom (normal electron config. for ground state)

electron configuration

2

an atom or group of atoms that have lost or gained one or more electrons

ion

3

an ion with a positive charge

cation

4

an ion with a negative charge

anion

5

a single atom ion

monatomic ion

6

a group of ions bonded together that act as an ion

polyatomic ion

7

a group of atoms that are held together by chemical forces; the smallest unit of matter that can exist by itself and retain all of a substance's chemical properties

molecule

8

atoms are usually chemically satisfied with 8 electrons in the valence shell

octet rule

9

the outer energy level of an atom

valence shell

10

an e- found in the valence shell

valence electron

11

an electron occupies the lowest energy orbital that can receive it

Aufbau principle

12

According to this principle, no two electrons in the same atom can have the same set of four quantum numbers.

Pauli excision principle

13

Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin state

Hund's rule

14

Group 18 elements (helium, neon, argon, krypton, xenon, and radon) are called this

Noble gases