Strontium (Sr) is a chemical element of the periodic table, located in the group 2 and the period 5, and has the atomic number 38. It is a soft, silvery-white yellowish alkaline earth metal, whose name comes from Strontian, a small town in Scotland. It is a highly reactive metal that reacts with both air … Read more
Calcium (Ca) is a chemical element with the atomic number 20, that belongs to the group 2 and period 4 of the periodic table. It is a soft, silvery-white metal that belongs to the group of alkaline earth metals. In its pure form, it is relatively stable in air, but can react with water to … Read more
Magnesium (Mg) is a chemical element with the atomic number 12. It is classified as an alkaline earth metal and is located in group 2 and period 3 of the periodic table. The element was first isolated by Sir Humphry Davy in 1808 through the electrolysis of magnesium oxide. Its name is derived from Magnesia, … Read more
Beryllium is a chemical element with the atomic number 4 and symbol Be in the periodic table. It is a rare and hard alkaline earth metal that is known for its high strength-to-weight ratio, low density, and excellent thermal conductivity. Beryllium is located in group 2 and period 2 of the periodic table and is … Read more
Francium (Fr) is a chemical element of the periodic table, located in group 1 and period 7, and has the atomic number 87. This element is named after France, the homeland of the discoverer Marguerite Perey. Francium is the heaviest chemical element of group 1 and the second most electropositive element. It is considered as … Read more
Caesium (Cs), also spelled as cesium in American English, is a chemical element of the periodic table, located in group 1 and period 6, and has the atomic number 55. It is a soft, silvery-gold alkali metal whose name comes from the Latin word “caesius” (which means sky blue). In 1860, German chemist Robert Bunsen … Read more
Rubidium (Rb) is a chemical element of the periodic table, located in group 1 and period 5, and has the atomic number 37. It is a very soft, silvery-white alkali metal whose name comes from the Latin word “rubidus” (which means the deepest red). It was discovered in 1861 by Robert Bunsen and Gustav Kirchhoff, … Read more
Potassium (K) is a chemical element of the periodic table, located in group 1 and period 4, having the atomic number 19. It is a soft, silvery white alkali metal whose name comes from the English word “potash”. In nature, potassium only exists in ionic salts. Naturally occurring potassium is made of three isotopes, of … Read more
Sodium (Na) is a chemical element of the periodic table, located in group 1 and period 3, and has the atomic number 11. It is a soft, silvery-white alkali metal whose name comes from the English word “soda”. Sodium is the sixth most common element on Earth, making about 2.6 percent of the planet’s crust. … Read more
The information on this page is ✔ fact-checked. Lithium, having the symbol Li and atomic number 3, is a chemical element. It is a soft, silvery-white alkali metal that is located in group 1 of the periodic table, with helium and beryllium as its neighbors. Lithium is the lightest solid element and has a density … Read more
