Atomic Facts & Figures

Chlorine Facts

actinium
aluminium
americium
antimony
argon
arsenic
astatine
barium
berkelium
beryllium
bismuth
bohrium
boron
bromine
cadmium
caesium
calcium
californium
carbon
cerium
chlorine
chromium
cobalt
copernicium
copper
curium
darmstadtium
dubnium
dysprosium
einsteinium
erbium
europium
fermium
flerovium
fluorine
francium
gadolinium
gallium
germanium
gold
hafnium
hassium
helium
holmium
hydrogen
indium
iodine
iridium
iron
krypton
lanthanum
lawrencium
lead
lithium
livermorium
lutetium
magnesium
manganese
meitnerium
mendelevium
mercury
molybdenum
neodymium
neon
neptunium
nickel
niobium
nitrogen
nobelium
osmium
oxygen
palladium
phosphorus
platinum
plutonium
polonium
potassium
praseodymium
promethium
protactinium
radium
radon
rhenium
rhodium
roentgenium
rubidium
ruthenium
rutherfordium
samarium
scandium
seaborgium
selenium
silicon
silver
sodium
strontium
sulfur
tantalum
technetium
tellurium
terbium
thallium
thorium
thulium
tin
titanium
tungsten
ununoctium
ununpentium
ununseptium
ununtrium
uranium
vanadium
xenon
ytterbium
yttrium
zinc
zirconium
Chlorine
17Cl
Appearance
pale yellow-green gas
General properties
Name, symbol, number chlorine, Cl, 17
Pronunciation /ˈklɔərn/ klohr-een
or /ˈklɔərɨn/ klohr-ən
Metallic category halogen
Group, period,block 17, 3, p
Standard atomic weight 35.45(1)
Electron configuration [Ne] 3s2 3p5
2, 8, 7
Electron shells of chlorine (2, 8, 7)
History
Discovery Carl Wilhelm Scheele (1774)
First isolation Carl Wilhelm Scheele (1774)
Recognized as an element by Humphry Davy (1808)
Physical properties
Phase gas
Density (0 °C, 101.325 kPa)
3.2 g/L
Liquid density atb.p. 1.5625[1] g·cm−3
Melting point 171.6 K, -101.5 °C, -150.7 °F
Boiling point 239.11 K, -34.04 °C, -29.27 °F
Critical point 416.9 K, 7.991 MPa
Heat of fusion (Cl2) 6.406 kJ·mol−1
Heat of vaporization (Cl2) 20.41 kJ·mol−1
Molar heat capacity (Cl2)
33.949 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 128 139 153 170 197 239
Atomic properties
Oxidation states 7, 6, 5, 4, 3, 2, 1-1
(strongly acidic oxide)
Electronegativity 3.16 (Pauling scale)
Ionization energies
(more)
1st: 1251.2 kJ·mol−1
2nd: 2298 kJ·mol−1
3rd: 3822 kJ·mol−1
Covalent radius 102±4 pm
Van der Waals radius 175 pm
Miscellanea
Crystal structure orthorhombic
Chlorine has a orthorhombic crystal structure
Magnetic ordering diamagnetic[2]
Electrical resistivity (20 °C) > 10 Ω·m
Thermal conductivity 8.9×10−3  W·m−1·K−1
Speed of sound (gas, 0 °C) 206 m·s−1
CAS registry number 7782-50-5
Most stable isotopes
Main article: Isotopes of chlorine
iso NA half-life DM DE (MeV) DP
35Cl 75.77% 35Cl is stable with 18 neutrons
36Cl trace 3.01×105 y β− 0.709 36Ar
ε - 36S
37Cl 24.23% 37Cl is stable with 20 neutrons

Content adapted from Wikipedia.org; text available under Creative Commons Attribution-ShareAlike License.

2013 Atomic-Facts.com
Diamond Cut Chart | Diamond Color Chart | Diamond Carat | Diamond Clarity Chart