periodic table

periodic table

1. Alkaline earth metal

   • Beryllium symbol Be and atomic number 4. As a free element it is a steel-gray, strong, lightweight alkaline earth metal.
   • Magnesium symbol Mg and atomic number 12 It is a shiny gray solid
   • Potassium is chemically very similar to sodium, Appearance , silver; with a pale yellow tint

2. Alkali metal

   • Hydrogen symbol H and atomic number 1. It's is colorless and hydrogen is the lightest element on the periodic table.
   • Lithium symbol Li and atomic number 3. It is a soft, silvery-white alkali metal.
   • Sodium symbol Na from Latin natrium atomic number 11. It is a soft, silvery-white, highly reactive metal. reacts with water
   • Potassium symbol K and atomic number 19. Potassium is chemically very similar to sodium,so they both react with water.

3. Transition metal

   • Scandium is a chemical element with symbol Sc and atomic number 21. Appearance silvery white

4. Metalloid

   • Boron symbol B and atomic number 5.Appearance black-brown Boron is a metalloid that is found in small amounts in meteoroids
   • Silicon symbol Si and atomic number 14. A hard and brittle crystalline solid .

5. Post-transition metal

   • Aluminium i symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal.

6. Other nonmetals

   • Carbon symbol C and atomic number 6. it is the second most abundant element in the human body
   • Nitrogen symbol N and atomic number 7 Nitrogen is the lightest member of group 15 of the periodic table
   • Oxygen symbol O and atomic number 8. what we need to stay alive.
   • Fluorine symbol F and atomic number 9 It is the lightest halogen
   • sulphur is a symbol S atomic number 16 sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and noble gases.
   • Chlorine symbol Cl and atomic number 17. The second-lightest of the halogens,

7. noble gases

   • Helium symbol He and atomic number 2 Its boiling point is the lowest among all the elements.
   • Neon symbol Ne and atomic number 10. Neon is a colorless,
   • Argon symbol Ar and atomic number 18. It is in group 18. Argon is the third-most abundant gas in the Earth's atmosphere

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