Berillium (Be)

chemical element with symbol Be and atomic number 4

Atomic Number	4
Atomic Weight	9.0121831
Massagetal	9

Group	2
Period	2
Block	s

proton	4 p⁺
neutron	5 n⁰
elektron	4 e^-

Physical Property

Atoomradius	105 pm 219 pm
molar volume	5 cm³/mol
Covalent Radius	102 pm 90 pm 85 pm 115 pm 96 pm
Metallic Radius	89 pm 112 pm
Ioonradius	16 pm 27 pm 45 pm
Crystal Radius	30 pm 41 pm 59 pm
Van der Waals radius	190 pm 153 pm 223 pm 153 pm 274,5 pm
density	1,85 g/cm³ 1 690 kg/m³

Chemical Property

{ERROR}

energie

proton affinity
electron affinity	-2,4 eV/particle
ionization energy	9,322699 eV/particle 18,211153 eV/particle 153,896198 eV/particle 217,7185766 eV/particle

Verdampingswarmte	309 kJ/mol
smeltingswarmte	12,21 kJ/mol
Vormingsentalpie	324 kJ/mol
elektron

Elektronskil	2, 2

Valenselektrone	2 ⓘ

elektronkonfigurasie	[He] 2s²ⓘ 1s² 2s²

Oksidasietoestand	0, 1, 2
Elektronegatiwiteit	9,323 eV/particle 0.144986 1.57
Electrophilicity Index	0,5110145863657444 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	2 741,15 K
Melting Point	1 560,15 K
critical pressure
critical temperature	5 205,15 K
triple point
appearance
kleur	Black #ff1493 #c2ff00 #c2ff00
appearance	white-gray metallic
Brekingsindeks
thermodynamic material property
Thermal Conductivity	201 W/(m K)
thermal expansion	0,0000113 1/K
molar heat capacity	16,443 J/(mol K)
Specific Heat Capacity	1,825 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
Geleidingsvermoë	25 MS/m
Elektriese resistiwiteit	0,00000003999999999998 Ω*m
superconductivity	0,026 K
Magnetisme
type	diamagnetic
magnetic susceptibility (Mass)	-0,0000000126 m³/Kg
magnetic susceptibility (Molar)	-0,0000000001136 m³/mol
magnetic susceptibility (Volume)	-0,00002328
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	{ERROR}
lattice constant	2,29 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	600 MPa 5,5 MPa 1 670 MPa
Massamodulus	130 GPa
Skuifmodulus	132 GPa
Young se modulus	287 GPa
Poisson se verhouding	0,032
Spoed van klank	13 000 m/s
classification
Category	Actinides, Alkaline earth metals
CAS Group	IIA
IUPAC Group	IIA
Glawe Number	77
Mendeleev Number	75
Pettifor Number	77
Geochemical Class	alkaline earth metal
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	37,74 ± 0,03 a₀
C6 Dispersion Coefficient	227 a₀ 214 a₀
allotrope
Neutron cross section	0,0092
Neutron Mass Absorption	0,00003
quantum number	1S0
Ruimtegroep	194 (P63/mmc)

Isotopes of Beryllium

Stable Isotopes	1
Unstable Isotopes	11
Natural Isotopes	1

⁵Be

Massagetal	5
neutron number	1
Relative Atomic Mass	5,03987 ± 0,00215 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum
parity	+

decay mode	intensity
p (proton emission)

⁶Be

Massagetal	6
neutron number	2
Relative Atomic Mass	6,019726409 ± 0,000005848 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	5 ± 0,3 zs
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1958
parity	+

decay mode	intensity
2p (2-proton emission)	100%

⁷Be

Massagetal	7
neutron number	3
Relative Atomic Mass	7,016928714 ± 0,000000076 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	53,22 ± 0,06 d
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1938
parity	-

decay mode	intensity
ϵ (electron capture)	100%

⁸Be

Massagetal	8
neutron number	4
Relative Atomic Mass	8,005305102 ± 0,000000037 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	81,9 ± 3,7 as
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1932
parity	+

decay mode	intensity
α (α emission)	100%

⁹Be

Massagetal	9
neutron number	5
Relative Atomic Mass	9,012183062 ± 0,000000082 Da
g-factor	-0,78495333333333 ± 0,0000033333333333333
natural abundance	100
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0,0529 ± 0,0004
ontdekkingsdatum	1921
parity	-

¹⁰Be

Massagetal	10
neutron number	6
Relative Atomic Mass	10,013534692 ± 0,000000086 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,387 ± 0,012 My
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1935
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹¹Be

Massagetal	11
neutron number	7
Relative Atomic Mass	11,02166108 ± 0,000000255 Da
g-factor	-3,3632 ± 0,0016
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	13,76 ± 0,07 s
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1958
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻α (β⁻-delayed α emission)	3.3%
B-p	0.0013%
β⁻ n (β⁻-delayed neutron emission)

¹²Be

Massagetal	12
neutron number	8
Relative Atomic Mass	12,026922082 ± 0,000002048 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	21,46 ± 0,05 ms
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1966
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.5%

¹³Be

Massagetal	13
neutron number	9
Relative Atomic Mass	13,036134506 ± 0,000010929 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1 ± 0,7 zs
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1983
parity	-

decay mode	intensity
n (neutron emission)

¹⁴Be

Massagetal	14
neutron number	10
Relative Atomic Mass	14,04289292 ± 0,00014197 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,53 ± 0,27 ms
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1973
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	86%
2n (2-neutron emission)	5%
β⁻ t (β⁻-delayed triton emission)	0.02%
β⁻α (β⁻-delayed α emission)	0.004%

¹⁵Be

Massagetal	15
neutron number	11
Relative Atomic Mass	15,053490215 ± 0,00017799 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	790 ± 270 ys
spin	5/2
nuclear quadrupole moment
ontdekkingsdatum	2013
parity	+

decay mode	intensity
n (neutron emission)	100%

¹⁶Be

Massagetal	16
neutron number	12
Relative Atomic Mass	16,061672036 ± 0,00017799 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	650 ± 130 ys
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2012
parity	+

decay mode	intensity
2n (2-neutron emission)	100%

geskiedenis

Ontdek deur	Fredrich Wöhler, A.A.Bussy
ligging van ontdekking	Germany/France
ontdekkingsdatum	1798
etimologie	Greek: beryllos, "beryl" (a mineral).
uitspraak	beh-RIL-i-em (Engels)

source

Abundance
Abundance in Earth's crust	2,8 mg/kg
natural abundance (oseaan)	0,0000056 mg/L
natural abundance (human body)	0,00000004 %
natural abundance (Meteoroïde)	0,0000029 %
natural abundance (Son)	0,00000001 %
Abundance in Universe	0,0000001 %

Nuclear Screening Constants

1	s	0.3152
2	s	2.088

Berillium on ChemicalAid

Berillium (Be)

Physical Property

Chemical Property

other

Isotopes of Beryllium

5Be

6Be

7Be

8Be

9Be

10Be

11Be

12Be

13Be

14Be

15Be

16Be

geskiedenis

source

Nuclear Screening Constants

⁵Be

⁶Be

⁷Be

⁸Be

⁹Be

¹⁰Be

¹¹Be

¹²Be

¹³Be

¹⁴Be

¹⁵Be

¹⁶Be