Period 4 element

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A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.

These are:

**Chemical elements in the fourth period**
Group	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Atomic number Name	19 K	20 Ca	21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
electron configuration all begin with [Ar]	4s¹	4s²	3d¹4s²	3d²4s²	3d³4s²	3d⁵4s¹	3d⁵4s²	3d⁶4s²	3d⁷4s²	3d⁸4s²	3d¹⁰4s¹	3d¹⁰4s²	3d¹⁰4s²4p¹	3d¹⁰4s²4p²	3d¹⁰4s²4p³	3d¹⁰4s²4p⁴	3d¹⁰4s²4p⁵	3d¹⁰4s²4p⁶

Element categories in the periodic table

Metals						Metalloids	Nonmetals			Unknown
Alkali metals	Alkaline earth metals	Inner transition elements		Transition elements	Other metals		Other nonmetals	Halogens	Noble gases
		Lanthanides	Actinides

v • d • e Periodic tables

Layouts	Standard · Vertical · Full names · Names and atomic masses · Text for last · Large table · Metals and nonmetals · Blocks · Valences · Inline f-block · 218 elements · Electron configurations · Atomic masses · Electronegativities · Alternatives · Crystal structure

Lists of elements by	Name · Atomic symbol · Atomic number · Atomic mass · Name etymology (after places, after people) · Discovery Boiling point · Melting point · Density · Oxidation state · Abundance · Nuclear stability

Groups	1 (Alkalis) · 2 (Alkaline earths) · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 (Pnictogens) · 16 (Chalcogens) · 17 (Halogens) · 18 (Noble gases)

Periods:	1 · 2 · 3 · 4 · 5 · 6 · 7 · 8

Other element categories	Metals · Transition metals · Metalloids · Nonmetals · Lanthanoids · Actinoids · Rare earths

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

Categories: Periodic table

Index Of Related Pages

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Period 4 element	Period 5	Period 5 element
Period 6	Period 6 element	Period 7
Period 7 element	Period 8	Period 8 element
Period 9 element	Period Pains	Period Pains (band)
Period Piece	Period Piece (book)	Period Piece Films
Period Piece Movies	Period Pieces: Women's Songs for Men and Women	Period blood girl
Period cup	Period dance	Period doubling bifurcation
Period drama	Period film	Period gene
Period instrument	Period instrument music	Period instruments
Period lattice	Period length	Period mapping
Period matrix	Period movie	Period number
Period of Adjustment	Period of Autumn and Spring	Period of Disunity
Period of Edo	Period of Five Dynasties and Ten Kingdoms	Period of Japanese Rule
Period of Japanese Rule (Korea)	Period of Japanese rule	Period of Jim Crow
Period of Spring and Autumn	Period of Warring States	Period of Wu Hu
Period of a function	Period of digestion	Period of enlightenment
Period of prescription	Period of revolution	Period of the Five Dynasties and the Ten Kingdoms
Period of the Sixteen Kingdoms	Period of the Three Kingdoms	Period of the Warring States
Period of the Warring states	Period of time	Period pain
Period pains	Period performance	Period piece
Period prevalence	Period television series	Periodate
Periodi	Periodic	Periodic Bernoulli polynomial
Periodic Chart	Periodic Chart of the elements	Periodic Detention Centre
Periodic Function	Periodic Law	Periodic Paralyses
Periodic Paralysis	Periodic Points Julia Set	Periodic Properties
Periodic Report of the United States of America to the United Nations Committee Against Torture	Periodic Table	Periodic Table: Elements with Style
Periodic Table of the Elements	Periodic Waveform period	Periodic abstinence
Periodic acid	Periodic acid-Schiff	Periodic acid-Schiff stain
Periodic acid-Shiff	Periodic acid-schiff reaction	Periodic acid Schiff
Periodic acid oxidation	Periodic annual increment	Periodic attractor
Periodic boundary conditions	Periodic chart	Periodic chart of the elements
Periodic cicada	Periodic cicadas	Periodic comet
Periodic continued fraction	Periodic current reversal	Periodic fever, aphthous stomatitis, pharyngitis and adenitis
Periodic fever syndrome	Periodic fever syndromes	Periodic function
Periodic functions	Periodic group	Periodic inventory
Periodic law	Periodic limb movement	Periodic limb movement disorder
Periodic limb movements in sleep	Periodic location update	Periodic motion
Periodic orbit	Periodic paralyses	Periodic paralysis
Periodic point	Periodic point attractor	Periodic points of complex quadratic mappings
Periodic poling	Periodic properties	Periodic redshift
Periodic redshifts	Periodic sentence	Periodic sequence
Periodic signal	Periodic solution	Periodic system
Periodic system of elements	Periodic table	Periodic table/Alternate Table
Periodic table/Big Table	Periodic table/Electron configurations	Periodic table/Extended Table
Periodic table/Huge Table	Periodic table/Metals and Non Metals	Periodic table/Standard Table
Periodic table/Table only	Periodic table/Wide Table	Periodic table/extended
Periodic table (Chinese)	Periodic table (alternate)	Periodic table (big)
Periodic table (block)	Periodic table (by blocks)	Periodic table (crystal structure)
Periodic table (detailed)	Periodic table (electron configurations)	Periodic table (extended)
Periodic table (huge)	Periodic table (large)	Periodic table (large version)
Periodic table (large version)/Blurb	Periodic table (metals and non-metals)	Periodic table (standard)
Periodic table (text only)	Periodic table (valance)	Periodic table (valence)
Periodic table (vertical)	Periodic table (wide)	Periodic table block
Periodic table chinese	Periodic table elements	Periodic table group
Periodic table history	Periodic table in Chinese	Periodic table in Japanese
Periodic table in Korean	Periodic table in chinese	Periodic table large
Periodic table of chemical elements	Periodic table of elements	Periodic table of science fiction
Periodic table of the chemical elements	Periodic table of the elements	Periodic table period
Periodic table series	Periodic tiling	Periodic trend
Periodic trends	Periodic variation	Periodic zeta function
Periodical	Periodical Cicada	Periodical Literature, Catholic
Periodical Publishers Association	Periodical cicada	Periodical cover date
Periodical cover dates	Periodical function	Periodical literature
Periodical poling	Periodical publication	Periodically-poled
Periodically poled KTP	Periodically poled lithium niobate	Periodicals
Periodicals Librarian	Periodicals librarian	Periodicity
Periodicity condition	Periodicity of the elements	Periodico 26
Periodico 26 (newspaper)	Periodico Dabaw	Periodinane
Periodisation	Periodization	Periodization (disambiguation)
Periodization in history	Periodization of the Indus Valley Civilization	Periodizations of capitalism
Periodogram	Periodontal	Periodontal Disease
Periodontal Ligament Stem Cells	Periodontal Membrane	Periodontal curette
Periodontal currette	Periodontal disease	Periodontal diseases
Periodontal ligament	Periodontal ligament stem cells	Periodontal membrane
Periodontal pocket	Periodontal probe	Periodontal scaler
Periodontic	Periodontics	Periodontist
Periodontitis	Periodontium	Periodontology
Periodontosis	Periodot	Periods
Periods of Architecture	Periods of Japan	Periods of architecture
Perioeci	Periogard	Perioikoi
Perioikos	Periokoi	Periolat brewery
Perion	Perionitis	Periontitis
Perionychium	Perionyx excavatus	Perioperative
Perioperative Medicine	Perioperative medicine	Perioperative mortality
Periophthalmus	Perioral	Perioral dermatitis
Periorbita	Periorbital bruising	Periorbital cellulitis
Periorbital ecchymosis	Perioristica	Periostat
Periosteal reaction	Periosteum	Periostitis
Periostosis	Periostracum	Periotic bone
Periovulatory	Perioxisomes	Peripartum
Peripartum cardiomyopathy	Periparus	Periparus ater
Periparus rufonuchalis	Peripatetic	Peripatetic Philosophy
Peripatetic axiom	Peripatetic philosophy	Peripatetic school
Peripateticism	Peripatetics	Peripatoides
Peripatoides indigo	Peripatoides suteri	Peripatopsis
Peripatopsis alba	Peripatopsis clavigera	Peripatopsis leonina
Peripatric	Peripatric speciation	Peripatus
Periperi	Peripeteia	Peripetia
Peripetus	Peripety	Periphals
Periphas	Periphelion	Peripheral
Peripheral (disambiguation)	Peripheral Blood Lymphocytes	Peripheral Canal
Peripheral Component Interconnect	Peripheral Component Interconnect Express	Peripheral Distribution Road
Peripheral Distributor Road	Peripheral ERA	Peripheral Heart Action Training
Peripheral Interchange Program	Peripheral Interface Adapter	Peripheral Interface Controller
Peripheral Nervous System	Peripheral Neuropathies	Peripheral Papuan Tip languages
Peripheral Pin Controller	Peripheral Sensor Interface 5	Peripheral Vision
Peripheral Vision (exhibition)	Peripheral Vision Horizon Display	Peripheral arterial disease
Peripheral arterial occlusive disease	Peripheral arteries	Peripheral arteriovenous malformation
Peripheral artery disease	Peripheral artery occlusive disease	Peripheral autonomic neuropathy
Peripheral benzodiazepine receptor	Peripheral blood	Peripheral blood cell
Peripheral blood cells	Peripheral blood lymphocyte therapy	Peripheral blood lymphocytes
Peripheral blood smear	Peripheral chemoreceptor	Peripheral chemoreceptors
Peripheral claiming	Peripheral claiming system	Peripheral component interconnect
Peripheral consonant	Peripheral consonants	Peripheral cyanosis
Peripheral cycle	Peripheral device	Peripheral devices

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