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Yttrium
Yttrium ( /ˈɪtriəm/ IT-ree-əm) is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element". Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element. Its only stable isotope, Y, is also its only naturally occurring isotope.
In 1787, Carl A...
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Chemical Element
The 39th Element in the Periodic Table
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Strontium
Strontium ( /ˈstrɒntiəm/ STRON-tee-əm) is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a...
Symbol:
- Y
Atomic mass:
| Mass | Uncertainty |
|---|---|
|
|
Electrons per shell:
- 2,8,18,9,2
Electron affinity:
| Value | Uncertainty |
|---|---|
|
|
Electronegativity (Pauling scale):
- 1.22
Atomic radius:
- 180 pm (0.00000709 )
Covalent radius:
- 1.62 pm (6.38E-8 )
Van der Waals radius:
- 240 pm (0.00000945 )
Isotopes:
- Yttrium-88
- Yttrium-79
- Yttrium-100
- Yttrium-78
- Yttrium-94
- Yttrium-101
- Yttrium-107
- Yttrium-105
- Yttrium-102
- Yttrium-76
Melting Point:
- 1,521.85 °C (2771.36 °F )
Periodic table block:
Ionization Energy:
- 6.2173 eV (0.0000062173 MeV )
Discovery Date:
- 1794
Discovering Country:
Electron Configuration:
- Kr 4d1 5s2
Drug ingredient
Active moiety of drug:
- Arsenic trioxide/Avena sativa flowering top/Berberis vulgaris root bark/Lycopodium clavatum spore/Sodium cation/Strychnos nux-vomica seed/Phytolacca americana root/Frangula alnus bark/Solidago virgaurea flowering top/Trifolium pratense flower/Iron/Magnesium cation/Sulfur/Chromium/Aluminum/Calcium/Activated charcoal/Silicon/Selenium/Zinc/Boron/Cobalt/Beryllium/Tin/Antimony/Cerium/Cesium/Arsenic/Zirconium/Strontium cation/Neodymium/Lead/Chloride ion/Lithium cation/Copper/Bromine/Yttrium/Iodine/Gadolinium cation (3+)/Fluoride ion/Samarium/Cadmium/Dysprosium/Mercury/Titanium/Potassium cation/Rubidium/Erbium/Vanadium/Scandium/Ruthenium/Lutetium/Holmium/Praseodymium/Terbium/Barium/Tellurium/Niobium/Palladium/Hafnium/Tantalum/Molybdenum/Europium/Gallium/Gold/Osmium/Platinum/Rhodium/Indium/Silver cation/Thorium/Iridium/Hydrogen cation/Nitrogen/Ytterbium homeopathic preparation
- Arsenic trioxide/Avena sativa flowering top/Berberis vulgaris root bark/Lycopodium clavatum spore/Sodium cation/Strychnos nux-vomica seed/Phytolacca americana root/Frangula alnus bark/Solidago virgaurea flowering top/Trifolium pratense flower/Iron/Magnesium cation/Sulfur/Chromium/Aluminum/Calcium/Activated charcoal/Silicon/Selenium/Zinc/Boron/Cobalt/Beryllium/Tin/Antimony/Cerium/Cesium/Arsenic/Zirconium/Strontium cation/Neodymium/Lead/Chloride ion/Lithium cation/Copper/Bromine/Yttrium/Iodine/Gadolinium cation (3+)/Fluoride ion/Samarium/Cadmium/Dysprosium/Mercury/Titanium/Potassium cation/Rubidium/Erbium/Vanadium/Scandium/Ruthenium/Lutetium/Holmium/Praseodymium/Terbium/Barium/Tellurium/Niobium/Palladium/Hafnium/Tantalum/Molybdenum/Europium/Gallium/Gold/Osmium/Platinum/Rhodium/Indium/Silver cation/Thorium/Iridium/Hydrogen cation/Nitrogen/Ytterbium homeopathic preparation