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seleniumbrominekrypton
Cl
Br
I  
 
 
General
Name, Symbol, Number bromine, Br, 35
Series halogens
Group, Period, Block 17 (VIIA), 4, pThe p-block of the periodic table of elements consists of the last six groups. In the elemental form of the p-block elements, the highest energy electron occupies a p- orbital. The p-block contains all of the nonmetals and semimetals, as well as some of t
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 3119 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes (300 KThe kelvin (symbol: K is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvin is absolute zero (when molecular motion stops), and one kelvin is the fraction 1/273. 16 of the thermodynamic temperature o), NA
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of Gas: red-brown
solid: metallic luster
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 79.904 amuThe atomic mass unit amu , unified atomic mass unit u , or dalton Da , is a small unit of mass used to express atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of Carbon-12. Accordingly, :1 u 1/N gram 1/(1000 N) kg (whe
Atomic radius (calc.) 115 (94) pm
Covalent radius 114 pm
van der Waals radius 185 pm
Electron configuration [ Ar]3 d10 4 s24p5
e- 's per energy level 2, 8, 18, 7
Oxidation states ( Oxide) ±1,5 (strong acid)
Crystal structure orthorhombic
Physical properties
State of matter solid at STP, liquid at
room temp ( nonmagnetic)
Melting point 265.8 K (19 ° F)
Boiling point 332 K (138 °F)
Molar volume 19.78 ×10-6 m3/mol
Heat of vaporization 15.438 kJ/mol
Heat of fusion 5.286 kJ/mol
Vapor pressure 5800 Pa at 280.1 K
Speed of sound 206 m/s at 293.15 K
Miscellaneous
Electronegativity 2.96 ( Pauling scale)
Specific heat capacity 480 J/(kg*K)
Electrical conductivity no data
Thermal conductivity 0.122 W/(m*K)
1st ionization potential 1139.9 kJ/mol
2nd ionization potential 2103 kJ/mol
3rd ionization potential 3470 kJ/mol
4th ionization potential 4560 kJ/mol
5th ionization potential 5760 kJ/mol
6th ionization potential 8550 kJ/mol
7th ionization potential 9940 kJ/mol
8th ionization potential 18600 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
79Br 50.69% Br is stable with 44 neutrons
81Br 49.31% Br is stable with 46 neutrons
SI units & STP are used except where noted.

Bromine (from Gr. Bromos, meaning "stench"), is a chemical element in the periodic table that has the symbol Br and atomic number 35. A halogen element, bromine is a red volatile liquid at room temperature which has a reactivity between chlorine and iodine. This element is harmful to human tissue in a liquid state and its vapour irritates eyes and throat.





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