Beryllium atom in beryllium flouride is
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Beryllium fluoride is the inorganic compoundwith the formula BeF2. This white solid is the principal precursor for the manufacture of beryllium metal. Its structure resembles that of quartz, but BeF2 is highly soluble in water.
Beryllium fluorideNamesIUPAC name
Beryllium fluoride
Other names
Beryllium difluoride
Difluoroberyllane
Identifiers
CAS Number
7787-49-7 
3D model (JSmol)
Interactive image
ChEBI
CHEBI:49499 
ChemSpider
22992 
ECHA InfoCard100.029.198
PubChem CID
24589
RTECS numberDS2800000
InChI
InChI=1S/Be.2FH/h;2*1H/q+2;;/p-2 
Key: JZKFIPKXQBZXMW-UHFFFAOYSA-L 
InChI=1/Be.2FH/h;2*1H/q+2;;/p-2
Key: JZKFIPKXQBZXMW-NUQVWONBAD
SMILES
[Be+2].[F-].[F-]
Properties
Chemical formula
BeF2Molar mass47.01 g/mol
hygroscopicAppearancecolorless lumpsDensity1.986 g/cm3Melting point554 °C (1,029 °F; 827 K)Boiling point1,169 °C (2,136 °F; 1,442 K)[1]
Solubility in water
very solubleSolubilitysparingly soluble in alcoholStructure
Crystal structure
Trigonal, α-quartz
Space group
P3121 (No. 152), Pearson symbol hP9[2]
Lattice constant
a = 473.29 pm, c = 517.88 pm
Molecular shape
LinearThermochemistry
Heat capacity (C)
1.102 J/K or 59 J/mol K
Std molar
entropy (So298)
45 J/mol K
Std enthalpy of
formation (ΔfHo298)
-1028.2 kJ/g or -1010 kJ/mol
Gibbs free energy(ΔfG˚)
-941 kJ/molHazards[5]Safety data sheetInChem MSDSGHS pictogramsGHS signal wordDANGER
GHS hazard statements
H301, H305, H311, H314, H315, H319, H330, H335, H372, H411
GHS precautionary statements
P201, P202, P260, P264, P270, P271, P273, P280, P281, P284, P301+310, P301+330+331, P302+352, P303+361+353, P304+340, P305+351+338, P308+313, P310, P312, P314, P320, P321, P322, P330, P361Flash pointNon-flammableLethal dose or concentration (LD, LC):
LD50 (median dose)
90 mg/kg (oral, rat)
100 mg/kg (oral, mouse)[4]US health exposure limits (NIOSH):
PEL (Permissible)
TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[3]
REL (Recommended)
Ca C 0.0005 mg/m3 (as Be)[3]
IDLH (Immediate danger)
Ca [4 mg/m3 (as Be)][3]Related compounds
Other anions
Beryllium chloride
Beryllium bromide
Beryllium iodide
Other cations
Magnesium fluoride
Calcium fluoride
Strontium fluoride
Barium fluoride
Radium fluoride
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Beryllium fluorideNamesIUPAC name
Beryllium fluoride
Other names
Beryllium difluoride
Difluoroberyllane
Identifiers
CAS Number
7787-49-7 
3D model (JSmol)
Interactive image
ChEBI
CHEBI:49499 
ChemSpider
22992 
ECHA InfoCard100.029.198
PubChem CID
24589
RTECS numberDS2800000
InChI
InChI=1S/Be.2FH/h;2*1H/q+2;;/p-2 
Key: JZKFIPKXQBZXMW-UHFFFAOYSA-L 
InChI=1/Be.2FH/h;2*1H/q+2;;/p-2
Key: JZKFIPKXQBZXMW-NUQVWONBAD
SMILES
[Be+2].[F-].[F-]
Properties
Chemical formula
BeF2Molar mass47.01 g/mol
hygroscopicAppearancecolorless lumpsDensity1.986 g/cm3Melting point554 °C (1,029 °F; 827 K)Boiling point1,169 °C (2,136 °F; 1,442 K)[1]
Solubility in water
very solubleSolubilitysparingly soluble in alcoholStructure
Crystal structure
Trigonal, α-quartz
Space group
P3121 (No. 152), Pearson symbol hP9[2]
Lattice constant
a = 473.29 pm, c = 517.88 pm
Molecular shape
LinearThermochemistry
Heat capacity (C)
1.102 J/K or 59 J/mol K
Std molar
entropy (So298)
45 J/mol K
Std enthalpy of
formation (ΔfHo298)
-1028.2 kJ/g or -1010 kJ/mol
Gibbs free energy(ΔfG˚)
-941 kJ/molHazards[5]Safety data sheetInChem MSDSGHS pictogramsGHS signal wordDANGER
GHS hazard statements
H301, H305, H311, H314, H315, H319, H330, H335, H372, H411
GHS precautionary statements
P201, P202, P260, P264, P270, P271, P273, P280, P281, P284, P301+310, P301+330+331, P302+352, P303+361+353, P304+340, P305+351+338, P308+313, P310, P312, P314, P320, P321, P322, P330, P361Flash pointNon-flammableLethal dose or concentration (LD, LC):
LD50 (median dose)
90 mg/kg (oral, rat)
100 mg/kg (oral, mouse)[4]US health exposure limits (NIOSH):
PEL (Permissible)
TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[3]
REL (Recommended)
Ca C 0.0005 mg/m3 (as Be)[3]
IDLH (Immediate danger)
Ca [4 mg/m3 (as Be)][3]Related compounds
Other anions
Beryllium chloride
Beryllium bromide
Beryllium iodide
Other cations
Magnesium fluoride
Calcium fluoride
Strontium fluoride
Barium fluoride
Radium fluoride
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