PERIOD 4

Specialty Definition: Period 4 element

(From Wikipedia, the free Encyclopedia)

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

#
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
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Alkali metals Alkaline earths Lanthanide Actinides Transition metals

Other metals Metalloids Nonmetals Halogens Noble gases

Period 1 element - Period 2 element - Period 3 element - Period 4 element - Period 5 element - Period 6 element - Period 7 element - Period 8 element -
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Period 4 element."

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
# 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
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INDEX

1. Bibliography

Alkali metals	Alkaline earths	Lanthanide	Actinides	Transition metals
Other metals	Metalloids	Nonmetals	Halogens	Noble gases