beryllium

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Atomic Mass	9.012183 u
Standard State	Solid
Electron Configuration	[He]2s2
Oxidation States	+2
Electronegativity (Pauling Scale)	1.57
Atomic Radius (van der Waals)	153 pm
Ionization Energy	9.323 eV
Melting Point	1560 K
Boiling Point	2744 K
Density	1.85 g/cm³
Year Discovered	1798

~Element Forms~
Name	         Formula   SMILES	Molecular Weight
beryllium	     Be	       [Be]	    9.012
beryllium-7	     Be	       [7Be]	7.017
beryllium-10	 Be	       [10Be]	10.014
beryllium(2+)	 Be+2	   [Be+2]	9.012
beryllium-9	     Be	       [9Be]	9.012
beryllium-8	     Be	       [8Be]	8.005

~Isotope Abundance~
Isotope	Atomic Mass(uncertainty) [u]	Abundance (uncertainty)
9Be	           9.012 1831(5)	        1

~Isotope mass, half life and decay~
Nuclide	Atomic Mass and Uncertainty [u]	Half Life and Uncertainty	Discovery Year	  Decay Modes, Intensities and Uncertainties [%]
5Be	    5.039870 ± 0.00215 [Estimated]	p-Unstable		                              p ?
6Be	    6.019726409 ± 0.000005848	    5.0 zs ± 0.3	             1958	          2p=100%
7Be	    7.016928714 ± 0.000000076	    53.22 d ± 0.06	             1938	          ε=100%
8Be	    8.005305102 ± 0.000000037	    81.9 as ± 3.7	             1932	          α=100%
9Be	    9.012183062 ± 0.000000082	    Stable	                     1921	          IS=100%
10Be	10.013534692 ± 0.000000086	    1.387 My ± 0.012	         1935	          β-=100%
11Be	11.021661080 ± 0.000000255	    13.76 s ± 0.07	             1958	          β-=100%; β-α=3.3±0.1%; β-p=0.0013±0.3%; β-n ?
12Be	12.026922082 ± 0.000002048	    21.46 ms ± 0.05	             1966	          β-=100%; β-n=0.50±0.3%
12Bem	12.026922082 ± 0.000002048	    233 ns ± 7	                 2007	          IT=100%
13Be	13.036134506 ± 0.000010929	    1.0 zs ± 0.7	             1983	          n ?
13Bep	13.036134506 ± 0.000010929	    Not-specified	             1992	
14Be	14.042892920 ± 0.00014197	    4.53 ms ± 0.27	             1973	          β-=100%; β-n=86±0.6%; β-2n=5±0.2%; β-t=0.02±0.1%; β-α<0.004%
14Bep	14.042892920 ± 0.00014197	    Not-specified	             1995	          
15Be	15.053490215 ± 0.00017799	    790 ys ± 270	             2013	          n=100%
16Be	16.061672036 ± 0.00017799	    650 ys ± 130	             2012	          2n=100%

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Atomic Mass 9.012183 u

Standard State  Solid

Electron Configuration  [He]2s2

Oxidation States    +2

Electronegativity (Pauling Scale)   1.57

Atomic Radius (van der Waals)   153 pm

Ionization Energy   9.323 eV

Melting Point   1560 K

Boiling Point   2744 K

Density 1.85 g/cm³

Year Discovered 1798

~Element Forms~

Name             Formula   SMILES   Molecular Weight

beryllium        Be        [Be]     9.012

beryllium-7      Be        [7Be]    7.017

beryllium-10     Be        [10Be]   10.014

beryllium(2+)    Be+2      [Be+2]   9.012

beryllium-9      Be        [9Be]    9.012

beryllium-8      Be        [8Be]    8.005

~Isotope Abundance~

Isotope Atomic Mass(uncertainty) [u]    Abundance (uncertainty)

9Be            9.012 1831(5)            1

~Isotope mass, half life and decay~

Nuclide Atomic Mass and Uncertainty [u] Half Life and Uncertainty   Discovery Year    Decay Modes, Intensities and Uncertainties [%]

5Be     5.039870 ± 0.00215 [Estimated]  p-Unstable                                    p ?

6Be     6.019726409 ± 0.000005848       5.0 zs ± 0.3                 1958             2p=100%

7Be     7.016928714 ± 0.000000076       53.22 d ± 0.06               1938             ε=100%

8Be     8.005305102 ± 0.000000037       81.9 as ± 3.7                1932             α=100%

9Be     9.012183062 ± 0.000000082       Stable                       1921             IS=100%

10Be    10.013534692 ± 0.000000086      1.387 My ± 0.012             1935             β-=100%

11Be    11.021661080 ± 0.000000255      13.76 s ± 0.07               1958             β-=100%; β-α=3.3±0.1%; β-p=0.0013±0.3%; β-n ?

12Be    12.026922082 ± 0.000002048      21.46 ms ± 0.05              1966             β-=100%; β-n=0.50±0.3%

12Bem   12.026922082 ± 0.000002048      233 ns ± 7                   2007             IT=100%

13Be    13.036134506 ± 0.000010929      1.0 zs ± 0.7                 1983             n ?

13Bep   13.036134506 ± 0.000010929      Not-specified                1992

14Be    14.042892920 ± 0.00014197       4.53 ms ± 0.27               1973             β-=100%; β-n=86±0.6%; β-2n=5±0.2%; β-t=0.02±0.1%; β-α<0.004%

14Bep   14.042892920 ± 0.00014197       Not-specified                1995

15Be    15.053490215 ± 0.00017799       790 ys ± 270                 2013             n=100%

16Be    16.061672036 ± 0.00017799       650 ys ± 130                 2012             2n=100%

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Contributed on Jan 20 2023

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*Data Integrated from PubChem*
Numbers in (brackets) represent uncertainty, from last digit
Atomic No.							4
Period No.							2
Group No.							2
Element Name 						Beryllium
Symbol								Be
Block 								Alkaline Earth Metal
Element Classification 				Metal
Physical State						Solid
Electron Configuration				[He] 2s2 	[2,2]
Atomic Mass(AMU)					9.0121831(5)
Density(g/cm^3) 					1.85
Oxidation States 					+2
Electronegativity (Pauling Scale)	1.57
Electronegativity (Allen Scale) 	1.576
Atomic Radius(Van Der Waals,pm) 	153
Atomic Radius(Covalent,pm)			96 (3)
Atomic Radius (Empirical,pm)		105
Ionization Energy(eV) 				9.3226(4)
Electron Affinity(eV) 				0.38
Melting Point(K) 					1560
Boiling Point(K)					2744
Year Discovered						1817
Estimated Crustal Abundance(mg/kg)	2.8
Estimated Oceanic Abundance(mg/L)	0.0000056 [5.6*10^(-6)]
Ground Level 						1S0

ISOTOPES
Numbers in (brackets) represent uncertainty. 
Section in half-life: Same unit
Others: From last digit
Mass No. | Name		   		| Half-life	 		| Abundance	| Atomic Mass	Uncertainty		| Year Discovered
5		 | Beryllium-5		| p-Unstable		|			| 5.039870		0.00215 (Est.)	| ?		
6		 | Beryllium-6		| 5.0zs (0.3)		| 			| 6.019726409	0.000005848		| 1958
7		 | Beryllium-7		| 53.22d (0.6)		|			| 7.016928714	0.000000076		| 1938
8		 | Beryllium-8		| 81.9as (3.7)		|			| 8.005305102	0.000000037		| 1932
9		 | Beryllium-9		| Stable			| 1			| 9.012183062	0.000000082		| 1921
10		 | Beryllium-10		| 1.387My (0.012)	|			| 10.013534692	0.000000086		| 1935
11		 | Beryllium-11 	| 13.76s (0.07)		|			| 11.021661080	0.000000255		| 1958
12		 | Beryllium-12		| 21.46ms (0.05)	|			| 12.026922082	0.000002048		| 1966
12m		 | Beryllium-12m	| 233ns (7)			|			| 12.026922082	0.000002048		| 2007
13		 | Beryllium-13		| 1.0zs (0.7)		|			| 13.036134506	0.000010929		| 1983
13p		 | Beryllium-13p	| Not-specified		|			| 13.036134506	0.000010929		| 1992
14		 | Beryllium-14		| 4.53ms (0.27)		|			| 14.042892920	0.00014197		| 1973
14p		 | Beryllium-14p	| Not-speified		|			| 14.042892920	0.00014197		| 1995
15		 | Beryllium-15		| 790ys (270)		|			| 15.053490215	0.00017799		| 2013
16		 | Beryllium-16		| 650ys (130)		|			| 16.061672036	0.00017799		| 2012

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*Data Integrated from PubChem*

Numbers in (brackets) represent uncertainty, from last digit

Atomic No.                          4

Period No.                          2

Group No.                           2

Element Name                        Beryllium

Symbol                              Be

Block                               Alkaline Earth Metal

Element Classification              Metal

Physical State                      Solid

Electron Configuration              [He] 2s2    [2,2]

Atomic Mass(AMU)                    9.0121831(5)

Density(g/cm^3)                     1.85

Oxidation States                    +2

Electronegativity (Pauling Scale)   1.57

Electronegativity (Allen Scale)     1.576

Atomic Radius(Van Der Waals,pm)     153

Atomic Radius(Covalent,pm)          96 (3)

Atomic Radius (Empirical,pm)        105

Ionization Energy(eV)               9.3226(4)

Electron Affinity(eV)               0.38

Melting Point(K)                    1560

Boiling Point(K)                    2744

Year Discovered                     1817

Estimated Crustal Abundance(mg/kg)  2.8

Estimated Oceanic Abundance(mg/L)   0.0000056 [5.6*10^(-6)]

Ground Level                        1S0

ISOTOPES

Numbers in (brackets) represent uncertainty.

Section in half-life: Same unit

Others: From last digit

Mass No. | Name             | Half-life         | Abundance | Atomic Mass   Uncertainty     | Year Discovered

5        | Beryllium-5      | p-Unstable        |           | 5.039870      0.00215 (Est.)  | ?

6        | Beryllium-6      | 5.0zs (0.3)       |           | 6.019726409   0.000005848     | 1958

7        | Beryllium-7      | 53.22d (0.6)      |           | 7.016928714   0.000000076     | 1938

8        | Beryllium-8      | 81.9as (3.7)      |           | 8.005305102   0.000000037     | 1932

9        | Beryllium-9      | Stable            | 1         | 9.012183062   0.000000082     | 1921

10       | Beryllium-10     | 1.387My (0.012)   |           | 10.013534692  0.000000086     | 1935

11       | Beryllium-11     | 13.76s (0.07)     |           | 11.021661080  0.000000255     | 1958

12       | Beryllium-12     | 21.46ms (0.05)    |           | 12.026922082  0.000002048     | 1966

12m      | Beryllium-12m    | 233ns (7)         |           | 12.026922082  0.000002048     | 2007

13       | Beryllium-13     | 1.0zs (0.7)       |           | 13.036134506  0.000010929     | 1983

13p      | Beryllium-13p    | Not-specified     |           | 13.036134506  0.000010929     | 1992

14       | Beryllium-14     | 4.53ms (0.27)     |           | 14.042892920  0.00014197      | 1973

14p      | Beryllium-14p    | Not-speified      |           | 14.042892920  0.00014197      | 1995

15       | Beryllium-15     | 790ys (270)       |           | 15.053490215  0.00017799      | 2013

16       | Beryllium-16     | 650ys (130)       |           | 16.061672036  0.00017799      | 2012

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Contributed on Oct 27 2022

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