1 1 2.20 1 -1 Hydrogen 1.00794 H1 IA Prof Mokeur's Periodic Table 2 18 VIIIA 4.002602 He 2 2 6.941 0.98 1 Lithium Li 3 9.012182 1.57 Beryllium Be 4 IIA Symbol 2 Electronegativity Name 3 4 5 6 1.00794 1 2.20 H1 Atomic number Relative atomic mass Oxidation number 8 9 10 11 12 13...
(25oC - 101 kPA) Ne = Gas Fe = Solid Ga = Liquid Tc = Synthetic B 13 Boron 26.98 14 C Carbon 28.09 N Nitrogen 15 30.97 O Oxygen 16 32.07 F Fluorine 17 35.45 18 Ne Neon 39.95 3 Na 19 Sodium 39.1 Mg Magnesium 20 40.08 3 21 IIIB 44.96 4 22 IVB 47.88 5 23 VB 50.94 6 24 ...
Name:OxygenSymbol:OAtomicNumber:8AtomicMass:15.9994amuMeltingPoint:-218.4°C(54.750008°K,-361.12°F)BoilingPoint:-183.0°C(90.15°K,-297.4°F)Name:FluorineSymbol:FAtomicNumber:9AtomicMass:18.998404amuMeltingPoint:-219.62°C(53.530006°K,-363.31598°F)BoilingPoint:-188.14°C(85....
periodic table of elements(元素周期表),简称periodic table(周期表)。 整个周期表根据元素价电子层排布方式被分为了五个大块的block(区): s-block,f-block,d-block,ds-block,p-block 这些区外,元素周期表还被人们划分为了更基本的“周期”与“族”。
Name:OxygenSymbol:OAtomicNumber:8AtomicMass:15.9994amuMeltingPoint:-218.4°C(54.750008°K,-361.12°F)BoilingPoint:-183.0°C(90.15°K,-297.4°F)Name:FluorineSymbol:FAtomicNumber:9AtomicMass:18.998404amuMeltingPoint:-219.62°C(53.530006°K,-363.31598°F)BoilingPoint:-188.14°C(85....
Periodic Table -> Nitrogen NitrogenNitrogen DetailsNitrogen Symbol: NNitrogen Atomic Number: 7Nitrogen Atomic Weight: 14.0067What is Nitrogen?Nitrogen (atomic number 7, symbol N) is a tasteless, odorless, and colorless chemical element, which, by volume, constitutes 78.09 percent of the earth's ...
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...
Periodic Table of the Elements Atomic Number Symbol 18 VIIIA 2 4.002602 H 1 2 1 0.0899 -259.14 37 Hydrogen S1/2 2.2 13.5984 -252.87 120 1 1s +1,-1 2 IIA 4 9.012182 3 Name Hydrogen *Density [Note] 0.0899 13.5984 †Ionization Energy (eV) *Melting Point (°C) ...
Atomic number:The number of protons in an atom's nucleus is referred to as the atomic number of that element. The number of protons defines what element it is and determines its chemical behavior. For example,carbon atomsalways have six protons;hydrogen atomsalways have one; andoxygen atomsalw...
Uses:Oxygen was the atomic weight standard of comparison for the other elements until 1961 when the International Union of Pure and Applied Chemistry adopted carbon 12 as the new basis. It is the third mostabundant elementfound in the sun and the earth, and it plays a part in the carbon-n...