Period 3 Element - Table of Elements

Table of Elements

**Periodic table: Chemical elements in the third period**
Group →	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
# Name	11 Na	12 Mg											13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
Electron configuration

Some element categories in the periodic table

Metals						Metalloids	Nonmetals			Unknown chemical properties
Alkali metals	Alkaline earth metals	Inner transition metals		Transition metals	Post-transition metals		Other nonmetals	Halogens	Noble gases
		Lanthanides	Actinides

Periodic tables

Standard form	Periodic table Compact Large Text only

Wide form	Wide form (Inline f-block) Wide form, large Vertical

Extended form	Extension beyond the 7th period Pyykkö model compact Extended form, large Pyykkö model

Alternative structure	Alternatives Janet table compact Chemical Galaxy

Element properties	Maximum valences Electron configurations Electronegativities Allen scale electronegativities Crystal structure Goldschmidt classification Atomic weights Dietary elements Nutritional elements Electron affinities Platinum group metals (PGM) Refractory metals Rare earth elements

List of elements by	Symbol Abundance (in humans) Nuclear stability Atomic properties Production

Data pages	Electron configurations Densities Electron affinities Melting points Boiling points Critical points Heats of fusion Heats of vaporization Heat capacities Vapor pressures Electronegativities Ionization energies Atomic radii Electrical resistivities Thermal conductivities Thermal expansion coefficients Speeds of sound Elastic properties Hardnesses Abundances Oxidation states

Groups	1 (Alkali metals) 2 (Alkaline earth metals) 3 4 5 6 7 8 9 10 11 12 13 (Boron group) 14 (Carbon group) 15 (Pnictogens) 16 (Chalcogens) 17 (Halogens) 18 (Noble gases)

Metals–nonmetals	Metals Metalloids dividing line Nonmetals Subgroups: Alkali metals Alkaline earth metals Lanthanides Actinides Superactinides Eka-superactinides Transition metals Metalloids Post-transition metals Other nonmetals Halogens Noble gases

Blocks	s-block p-block d-block f-block g-block

Periods	1 2 3 4 5 6 7 8

History	Element discoveries History of the periodic table Name etymology places scientists

See also	Dmitri Mendeleev IUPAC nomenclature Systematic element name Groups of elements Trivial name Chemical elements in East Asian languages

Book:Periodic table Category:Periodic table Portal:Chemistry