Template:Infobox francium

Francium, ₈₇Fr

Francium
उच्चारण	/ˈfrænsiəm/ ​(FRAN-see-əm)
जन अंक	[223]
Francium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Cs ↑ Fr ↓ (Uue) radon ← francium → radium
Atomic number (Z)	87
समूह	group 1: hydrogen and alkali metals
अवधि	period 7
ब्लॉक	s-block
ऋणावेशित सूक्ष्म अणु का विन्यास	[Rn] 7s1
प्रति शेल इलेक्ट्रॉन	2, 8, 18, 32, 18, 8, 1
भौतिक गुण
Phase at STP	solid
गलनांक	300 K ​(27 °C, ​81 °F)
क्वथनांक	950 K ​(677 °C, ​1251 °F)
Density (near r.t.)	2.48 g/cm3 (estimated)
Vapor pressure (extrapolated) P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 404 454 519 608 738 946
परमाणु गुण
ऑक्सीकरण राज्य	+1 (a strongly basic oxide)
इलेक्ट्रोनगेटिविटी	Pauling scale: >0.79
Ionization energies	1st: 393 kJ/mol
सहसंयोजक त्रिज्या	260 pm (extrapolated)
[वैन डेर वाल्स रेडियस]]	348 pm (extrapolated)
अन्य गुण
प्राकृतिक घटना	from decay
क्रिस्टल की संरचना	​body-centered cubic (bcc) File:Cubic-body-centered.svg (extrapolated)
ऊष्मीय चालकता	15 W/(m⋅K) (extrapolated)
विद्युत प्रतिरोधकता	3 µΩ⋅m (calculated)
चुंबकीय आदेश	Paramagnetic
CAS नंबर	7440-73-5
History
नामी	after France, homeland of the discoverer
खोज और पहला अलगाव	Marguerite Perey (1939)
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct

Fr:   data m.p. cat ()
	in	calc from C	diff	report	ref
C	27	—	—
K	300	300	0
F	81	81	0
max precision	0
WD
input	C: 27, K: 300, F: 81
comment

Fr:   data b.p. cat ()
	in	calc from C	diff	report	ref
C	677	—	—
K	950	950	0
F	1251	1251	0
max precision	0
WD
input	C: 677, K: 950, F: 1251
comment

PTFrancium

Rn ← i'box Rn	iso 87Fr () infobox () isobox	→ Ra i'box Ra
Commons Commons Wikidata Wikidata:Q671 Wiktionary Wiktionary Indexes in PT: § below · Page

Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Allotropes (demo)
Group (demo)
Period (demo)
Block (demo)
Standard atomic weight
most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Wikidata *
Symbol etymology (11 non-trivial)
* Not used in {{Infobox element}} (2021-12-24) See also Category:Infobox element data sets (0)

References

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