Template:Infobox chlorine

[[Category:Template:Pagetype with short description]]

Chlorine, ₁₇Cl

Chlorine
Pronunciation	/ˈklɔːriːn, -aɪn/ ​(Template:Respell)
Appearance	pale yellow-green gas
Standard atomic weight Ar, std(Cl)	[[[:Template:Val]], Template:Val] conventional: Template:Val
Chlorine in the periodic table
Template:Periodic table (32 columns, micro) F ↑ Cl ↓ Br sulfur ← chlorine → argon
Atomic number (Z)	17
Group	group 17 (halogens)
Period	period 3
Block	p-block
Electron configuration	[Ne] 3s2 3p5
Electrons per shell	2, 8, 7
Physical properties
Phase at STP	gas
Melting point	(Cl2) 171.6 K ​(−101.5 °C, ​−150.7 °F)
Boiling point	(Cl2) 239.11 K ​(−34.04 °C, ​−29.27 °F)
Density (at STP)	3.2 g/L
when liquid (at b.p.)	1.5625 g/cm3
Critical point	416.9 K, 7.991 MPa
Heat of fusion	(Cl2) 6.406 kJ/mol
Heat of vaporization	(Cl2) 20.41 kJ/mol
Molar heat capacity	(Cl2) 33.949 J/(mol·K)
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	−1, +1, +2, +3, +4, +5, +6, +7 (a strongly acidic oxide)
Electronegativity	Pauling scale: 3.16
Ionization energies	1st: 1251.2 kJ/mol 2nd: 2298 kJ/mol 3rd: 3822 kJ/mol (more)
Covalent radius	102±4 pm
Van der Waals radius	175 pm
Spectral lines of chlorine
Other properties
Natural occurrence	primordial
Crystal structure	​orthorhombic
Speed of sound	206 m/s (gas, at 0 °C)
Thermal conductivity	8.9×10−3 W/(m·K)
Electrical resistivity	>10 Ω·m (at 20 °C)
Magnetic ordering	diamagnetic
Magnetic susceptibility	−40.5·10−6 cm3/mol
CAS Number	Cl2: 7782-50-5
History
Discovery and first isolation	Carl Wilhelm Scheele (1774)
Recognized as an element by	Humphry Davy (1808)
Main isotopes of chlorine
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]] 35Cl 76% stable 36Cl trace 3.01×105 y β− 36Ar ε 36S 37Cl 24% stable

[[Category:Infobox templates|Template:Remove first word]]

Cl Template:Wikidata data m.p. cat
	in	calc from C	diff	report	ref
C	−101.5	—	—
K	171.6	171.7	-0.1
F	−150.7	−150.7	0		Template:Subpage other
max precision	1
WD	Template:Wikidata				Template:Wikidata
input	C: −101.5, K: 171.6, F: −150.7
comment

Cl Template:Wikidata data b.p. cat
	in	calc from C	diff	report	ref
C	−34.04	—	—
K	239.11	239.11	0
F	−29.27	−29.27	0		Template:Subpage other
max precision	2
WD	Template:Wikidata				Template:Wikidata
input	C: −34.04, K: 239.11, F: −29.27
comment

PTChlorine

S ← i'box S	iso 17Cl () infobox () isobox	→ Ar i'box Ar
Commons  Wikidata:Q688  Wiktionary Indexes in PT: § below · Page

Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03) See also {{Infobox element/symbol-to--navbox}}

References

These references will appear in the article, but this list appears only on this page.