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Flashcards in Ch 5 Vocab Deck (18):
1

Periodic table

An arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group

2

Lanthanides

The 14 elements with atomic numbers from 58 to 71

3

Actinides are the

14 elements with atomic numbers from 90 to 103

4

Alkali metals

The elements of group 1 of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium)

5

Alkaline-earth metals

The elements of group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, radium)

6

Transition elements

D block elements are metals with typical metallic properties

7

Main group elements

P block elements together with the block elements

8

Halogens

Elements of group 17 (fluorine, chlorine, bromine, iodine, astatine)

9

Atomic radius

One half the distance between the nuclei of identical atoms that are bonded together

10

Ion

Atom or group of bonded atoms that has a positive or negative charge

11

Ionization

Any process that results in the formation of an ion

12

Ionization energy IE

Energy required to remove one electron from a neutral atom

13

Electrons affinity

Energy change that occurs when an electron is acquired by a neutral ago.

14

Cation

Positive ion

15

Anion

A negative ion

16

Valence electrons

Electrons available to be lost gained or shared in the formation of chemical compounds

17

Electronegativity

Measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound

18

Periodic law

The physical and chemical properties of the elements are periodic functions of their atomic numbers