Group 1 Alkali Metals

By : Allison, and Bella

Elements in Group

Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium, Francium

Hydrogen

Hydrogen (H) has the atomic number is 1. Atomic mass is 1. Valence electrons has 1. this element is used to protect the atmosphere. The discoverer is Henry Cavendish.

Lithium

Lithium (Li) has atomic number if 11. Atomic mass of 7. Valence electrons 1. This element is used for rechargeable batteries for mobile phones, laptops, digital cameras and electric vehicles. The person who discovered this is Johan August Arfwedson.

Sodium

Sodium (Na) has the atomic number of 11. Atomic mass is 23. Valence electrons is 1. This element is used as salt in many fertilizer. The discovers is Humphry Davy.

Potassium

Potassium (K) has the atomic number of 19. Atomic mass is 39. Valence electrons is 1. This element is used for manufacture of glass. The person who discovered this was Humphry Davy.

Rubidium

Rubidium (Rb) has the atomic number of 37. Atomic mass has 85.468. Valence electrons has 1. The use of this element is vacuum tubes discovered by Robert Bunsen and Gustav Kirchhoff.

Cesium

Cesium (Cs) has the atomic number is 55. Atomic mass is 132.905. Valence electrons has 1. The use of this element is combing with oxygen and it is used often for getter. The discovers are Robert Wilhelm Bunsen.

Francium

Francium (Fr) has the atomic number of 87. Atomic mass has 223. Valence electrons has 1. This element has no use except in the scientific research. Who discovered it was Marguerite perry.

What do they have on common?

They all have the same group number, They have a use of life.
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What we used to find our research is http://periodic.lanl.gov/index.shtml.