Transition Metals 8-12
By Group 7
Why are we listed where we are on the Periodic Table?
Group’s position Transition metals 8-12 : (G) 8-12 (P) 4, 5, and 6 : These elements are in the position that they are in because these transition metals represent a transition, which means there is a change from metallic characteristics to non-metal characteristics.p metals
Transition Metals 8-12
iron-
Fe
Discoverer= unknown before 5000 BC, Gerzah, Egypt
Valence = 6
BP = 3134 K MP = 1811 K
cobalt-
Discoverer=Georg Brandt (1732)
Co,
Valence = 5
BP = 2022 K MP = 600.61 K
nickle-
discovere=Axel Fredrik Cronstedt(1751)
Ni,
Valence = 4
BP = 3186 MP = 1728
copper-
discoverer= Middle Easterns (9000 BC), Middle East
Cu,
Valence = 4
BP = 3200 K MP = 1357.77 K
zinc-
discoverer=Indian metallurgists(before 1000 BC)
Zn,
Valence = 2
BP = 1180 K MP = 692.68 K
ruthenium-
discoverer=Jędrzej Śniadecki (1807
Ru,
Valence = 8
BP = 4423 K MP = 2607 K
rhodium-
discoverer=William Hyde Wollaston(1804)
Rh,
Valence = 6
BP = 3968 K MP = 2237 K
palladium-
discoverer=William Hyde Wollaston (1803)
Pd,
Valence = 4
BP = 3236 K MP = 1828.05 K
silver-
discoverer=before 5000 BC, anglo- saxons
Ag,
Valence = 3
BP = 2435 K MP = 1234.93 K
cadmium-
discoverer=Karl Samuel Leberecht Hermannand Friedrich Stromeyer (1817)
Cd,
Valence = 2
BP = 1040 K MP = 594.22 K
osmium-
discoverer=Smithson Tennant (1803)
Os,
Valence = 8
BP = 5285 K MP = 3306 K
iridium-
discoverer=Smithson Tennant (1803
Ir,
Valence = 8
BP = 4701 K MP = 2739 K
platinum-
discoverer=Antonio de Ulloa (1735)
Pt,
Valence = 6
BP = 4098 K MP = 2041.4 K
gold-
discoverer=Middle Easterns(before 6000 BC)
Au,
Valence = 5
BP = 3129 K MP = 1337.33 K
mercury-
discoverer=Ancient Chinese and Indians(before 2000 BC), Egyptian tombs that date from 1500 BC
Hg,
Valence = 4
BP = 629.88 K MP = 234.32 K
Uses and products of this group
Iron : Is used in building materials
Copper : Used to make water pipes, used in electrical cords
Silver : SIlver is used to make different types of jewelryEnvironmental Hazards Caused by the transition metals
Mercury: using mercury in the manufacturing of products gas caused too much to be in the earths atmosphere. this in turn can lead to health problems for humans and animals living in these areas.
Health Hazards caused by the Transition Metals
Iron: too much iron in the body can lead to health problems such as Liver cancer, Diabetes, and Alzheimer disease.
( because you body can only hold so much and organs can become clogged)
The Video Above May or May not Work, we are having some issues with it.
www.youtube.com/watch?v=vwd4qsmUxwM
(It was not made by us all credit goes to the person who made the video.)