self.assertRaises(ValueError,Element.from_Z,1000) 开发者ID:ExpHP,项目名称:pymatgen,代码行数:56,代码来源:test_periodic_table.py 示例3: test_equals ▲点赞 3▼ deftest_equals(self):random_z = random.randint(1,92) fixed_el =Element.from_Z(random_z) other_z = random.randint(1,92)while...
An element's name, atomic weight, and oxidation state(s) will appear when you scroll over an element's symbol. Oxidation states in blue refer to standards made by Inorganic Ventures. Those in italics are most common. A red X indicates the element is not commercially available for analytical...
94 137 871 Tool description: The periodic table of elements is a list of chemical elements arranged from small to large according to the atomic number, which is convenient for you to consult and use. Recommendation tool: Tool label:
Periodic table of elements with information on chemical elements like gold, silver, iron, neon, helium, chlorine, copper, cobalt, and more
The Periodic Table of Elements 1 HYDROGEN H 1 7 6 4 BERYLLIUM 3 LITHIUM Li 23 Be 9 24 CARBON C 12 23 Atomic Number = Number of Protons = Number of Electrons Chemical Symbol Chemical Name Atomic Weight = Number of Protons + Number of Neutrons* 5 6 2 BORON B 11 27 CARBON C 12 28...
1 Alkali and Alkalinse earth metals 2 Transition Metals More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The disc...
H: This is the symbol for Hydrogen, the most common element in the universe. He: This symbol represents Helium, a noble gas used in balloons and as a cooling medium. Li: This stands for Lithium, a metal used in rechargeable ba...
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
Periodic Table 元素周期表(相对分子量) PERIOD 1 IA 18 VIIIA 1 1.008 2 4 1 H Group IUPAC Group CAS Metal Semi Metal Non Metal He Alkaline Metal Chalcogens Element Hydrogen 2 IIA 1 IA Alkaline Earth Metal Halogens Element 13 IIIA 14 IVA 15 VA 16 VIA 17 VIIA Helium 3 6.94 4 9.01 Ato...
PeriodicTableoftheElements Selectanelement (=Internetlink)Name:HydrogenSymbol:HAtomicNumber:1AtomicMass:1.00794amuMeltingPoint:-259.14°C(14.009985°K,-434.45203°F)BoilingPoint:-252.87°C(20.280005°K,-423.166°F)Name:HeliumSymbol:HeAtomicNumber:2AtomicMass:4.002602amuMeltingPoint:-272.0°C...