Period 6 Element - Properties

Properties

This period contains the lanthanides, also known as the rare earths. Many lanthanides are known for their magnetic properties, such as neodymium. Many period 6 transition metals are very valuable, such as gold, however many period 6 poor metals are incredibly toxic, such as thallium. Period 6 contains the last stable element, lead. All subsequent elements in the periodic table are radioactive. After bismuth, which has a half-life or more than 1019 years, polonium, astatine, and radon are some of the shortest-lived and rarest elements known; less than a gram of astatine estimated to exist on earth at any given time.

Chemical elements in the sixth period
Group → 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
↓ Period
6 55
Cs		 56
Ba		 57
La		 58
Ce		 59
Pr		 60
Nd		 61
Pm		 62
Sm		 63
Eu		 64
Gd		 65
Tb		 66
Dy		 67
Ho		 68
Er		 69
Tm		 70
Yb		 71
Lu		 72
Hf		 73
Ta		 74
W		 75
Re		 76
Os		 77
Ir		 78
Pt		 79
Au		 80
Hg		 81
Tl		 82
Pb		 83
Bi		 84
Po		 85
At		 86
Rn

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
Color of the atomic number shows state of matter
(at standard conditions: 0 °C and 1 atm):
black=Solid green=Liquid red=Gas grey=Unknown
Border shows natural occurrence:
Primordial From decay Synthetic

Read more about this topic:  Period 6 Element

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