ALKALI METAL

• Lithium
• Sodium
• Potassium
• Rubidium
• Cesium and Francium

Mystery Element
It belongs to the metal family is very reactive with water it symbol is K element number 19.

Lithium
Lithium is a chemical element with symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.
Symbol: Li
Electron configuration: [He] 2s1
Atomic number: 3
Electrons per shell: 2,1
Melting point: 357°F (180.5°C)
Atomic mass: 6.941 ± 0.002 u
Discoverer: Johan August Arfwedson in 1817

Sodium
Sodium is a chemical element with symbol Na and atomic number 11. It is a soft, silver-white, highly reactive metal and is a member of the alkali metals; its only stable isotope is ²³Na.
Symbol: Na.
Electron configuration: Ne 3s1
Atomic number: 11
Formula: Na
Molar mass: 22.9898 g/mol
Atomic mass: 22.989769 ± 0.00000002 u
Discoverer: Humphry Davy in 1807

Potassium
Potassium is a chemical element with symbol K and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating
Symbol: K
Electron configuration: [Ar] 4s1
Atomic number: 19
Formula: K
Atomic mass: 39.0983 ± 0.0001 u
Drug class: Potassium Salt
Other drugs in same class: Potassium chloride, Potassium nitrate
Discovered: Humphry Davy in 1807

Rubidium
Rubidium is a chemical element with symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678.
Symbol: Rb
Electron configuration: Kr 5s1
Atomic number: 37
Melting point: 103.1°F (39.48°C)
Discovered: 1861
Atomic mass: 85.4678 ± 0.0003 u
Discoverers: Robert Bunsen, Gustav Kirchhoff in 1861

Untitled Slide

LITHIUM

SODIUM

POTASSIUM

RUBIDIUM

CESIUM

FRANCIUM