Lithium

Symbol: Li

Atomic Mass: 7 AMU

Electron Configuration: [He]2s1

Electronegativity: 0.98

Atomic Radius (Van De Walls Radius): 182 picometers

Ionization Energy: 5.392 eV

Electron Affinity 0.618 eV

Oxidation States: 1

Standard State: Solid

Melting Point: 453.65

Boiling Point: 1615

Density: 0.534 g/cm3

Block: Alkali metal

Year of Discovery: 1817

Data from Pubchem

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*Data Integrated from PubChem*

Numbers in (brackets) represent uncertainty, from last digit

Atomic No.                          3

Period No.                          2

Group No.                           1

Element Name                        Lithium 

Symbol                              Li

Block                               Alkali Metal

Element Classification              Metal

Physical State                      Solid

Electron Configuration              [He] 2s1 [2,1]

Atomic Mass(AMU)                    6.967(30)

Density(g/cm^3)                     0.534

Oxidation States                    +1

Electronegativity (Pauling Scale)   0.998

Electronegativity (Allen Scale)     0.912

Atomic Radius(Van Der Waals,pm)     182

Atomic Radius(Covalent,pm)          128 (7)

Atomic Radius (Empirical,pm)        145

Ionization Energy(eV)               5.392

Electron Affinity(eV)               0.618

Melting Point(K)                    453.65

Boiling Point(K)                    1615

Year Discovered                     1817

Estimated Crustal Abundance(mg/kg)  20 [2*10^1]

Estimated Oceanic Abundance(mg/L)   0.18 [1.8*10^(-1)]

Ground Level                        2S1/2

​

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

3        | Lithium-3    | Unstable (?)   |               | 3.03775          0.002147        |

4        | Lithium-4    | 91 ys          |               | 4.027185561      0.000227733     | 1965

5        | Lithium-5    | 370 ys         |               | 5.0125378        0.000053677     | 1941

6        | Lithium-6    | Stable         | 0.0759 (4)    | 6.01512288742    0.00000000155   | 1921

7        | Lithium-7    | Stable         | 0.9241 (4)    | 7.01600343426    0.0000000045    | 1921 

8        | Lithium-8    | 838.7 ms       |               | 8.022486244      0.00000005      | 1935

9        | Lithium-9    | 178.2 ms       |               | 9.026790191      0.0000002       | 1951

10       | Lithium-10   | 2.0 zs         |               | 10.035483453     0.000013656     | 1975

10m      | Lithium-10m  | 3.7 zs         |               | 10.035483453     0.000013656     | 1994

10n      | Lithium-10n  | 1.35 zs        |               | 10.035483453     0.000013656     | 1993

11       | Lithium-11   | 8.75 ms        |               | 11.043723581     0.00000066      | 1966

12       | Lithium-12   | N/A            |               | 12.025613942     0.000032213     | 2008

13       | Lithium-13   | 3.3 zs         |               | 13.061171503     0.00007515      | 2008