first 20 elements

. Hydrogen

                  •               Name of Element: Hydrogen

                  •               Symbol: H

                  •               Atomic Number: 1

                  •               Number of Electrons: 1

                  •               Number of Protons: 1

                  •               Mass Number: 1

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 1

                  •               Energy Levels:

                  •               1 electron in the 1st energy level

2. Helium

                  •               Name of Element: Helium

                  •               Symbol: He

                  •               Atomic Number: 2

                  •               Number of Electrons: 2

                  •               Number of Protons: 2

                  •               Mass Number: 4

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

3. Lithium

                  •               Name of Element: Lithium

                  •               Symbol: Li

                  •               Atomic Number: 3

                  •               Number of Electrons: 3

                  •               Number of Protons: 3

                  •               Mass Number: 7

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:1

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               1 electron in the 2nd energy level

4. Beryllium

                  •               Name of Element: Beryllium

                  •               Symbol: Be

                  •               Atomic Number: 4

                  •               Number of Electrons: 4

                  •               Number of Protons: 4

                  •               Mass Number: 9

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:2

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               2 electrons in the 2nd energy level

5. Boron

                  •               Name of Element: Boron

                  •               Symbol: B

                  •               Atomic Number: 5

                  •               Number of Electrons: 5

                  •               Number of Protons: 5

                  •               Mass Number: 11

                  •               State of the Element: Metalloid

                  •               Electron Configuration: 2:3

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               3 electrons in the 2nd energy level

6. Carbon

                  •               Name of Element: Carbon

                  •               Symbol: C

                  •               Atomic Number: 6

                  •               Number of Electrons: 6

                  •               Number of Protons: 6

                  •               Mass Number: 12

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:4

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               4 electrons in the 2nd energy level

7. Nitrogen

                  •               Name of Element: Nitrogen

                  •               Symbol: N

                  •               Atomic Number: 7

                  •               Number of Electrons: 7

                  •               Number of Protons: 7

                  •               Mass Number: 14

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:5

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               5 electrons in the 2nd energy level

8. Oxygen

                  •               Name of Element: Oxygen

                  •               Symbol: O

                  •               Atomic Number: 8

                  •               Number of Electrons: 8

                  •               Number of Protons: 8

                  •               Mass Number: 16

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:6

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               6 electrons in the 2nd energy level

9. Fluorine

                  •               Name of Element: Fluorine

                  •               Symbol: F

                  •               Atomic Number: 9

                  •               Number of Electrons: 9

                  •               Number of Protons: 9

                  •               Mass Number: 19

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:7

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               7 electrons in the 2nd energy level

10. Neon

                  •               Name of Element: Neon

                  •               Symbol: Ne

                  •               Atomic Number: 10

                  •               Number of Electrons: 10

                  •               Number of Protons: 10

                  •               Mass Number: 20

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:8

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

11. Sodium

                  •               Name of Element: Sodium

                  •               Symbol: Na

                  •               Atomic Number: 11

                  •               Number of Electrons: 11

                  •               Number of Protons: 11

                  •               Mass Number: 23

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:8:1

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               1 electron in the 3rd energy level

12. Magnesium

                  •               Name of Element: Magnesium

                  •               Symbol: Mg

                  •               Atomic Number: 12

                  •               Number of Electrons: 12

                  •               Number of Protons: 12

                  •               Mass Number: 24

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:8:2

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               2 electrons in the 3rd energy level

13. Aluminum

                  •               Name of Element: Aluminum

                  •               Symbol: Al

                  •               Atomic Number: 13

                  •               Number of Electrons: 13

                  •               Number of Protons: 13

                  •               Mass Number: 27

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:8:3

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               3 electrons in the 3rd energy level

14. Silicon

                  •               Name of Element: Silicon

                  •               Symbol: Si

                  •               Atomic Number: 14

                  •               Number of Electrons: 14

                  •               Number of Protons: 14

                  •               Mass Number: 28

                  •               State of the Element: Metalloid

                  •               Electron Configuration: 2:8:4

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               4 electrons in the 3rd energy level

15. Phosphorus

                  •               Name of Element: Phosphorus

                  •               Symbol: P

                  •               Atomic Number: 15

                  •               Number of Electrons: 15

                  •               Number of Protons: 15

                  •               Mass Number: 31

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:8:5

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               5 electrons in the 3rd energy level

16. Sulfur

                  •               Name of Element: Sulfur

                  •               Symbol: S

                  •               Atomic Number: 16

                  •               Number of Electrons: 16

                  •               Number of Protons: 16

                  •               Mass Number: 32

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:8:6

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               6 electrons in the 3rd energy level

17. Chlorine

                  •               Name of Element: Chlorine

                  •               Symbol: Cl

                  •               Atomic Number: 17

                  •               Number of Electrons: 17

                  •               Number of Protons: 17

                  •               Mass Number: 35

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:8:7

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               7 electrons in the 3rd energy level

18. Argon

                  •               Name of Element: Argon

                  •               Symbol: Ar

                  •               Atomic Number: 18

                  •               Number of Electrons: 18

                  •               Number of Protons: 18

                  •               Mass Number: 40

                  •               State of the Element: Non-metal

                  •               Electron Configuration: 2:8:8

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               8 electrons in the 3rd energy level

19. Potassium

                  •               Name of Element: Potassium

                  •               Symbol: K

                  •               Atomic Number: 19

                  •               Number of Electrons: 19

                  •               Number of Protons: 19

                  •               Mass Number: 39

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:8:8:1

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               8 electrons in the 3rd energy level

                  •               1 electron in the 4th energy level

20. Calcium

                  •               Name of Element: Calcium

                  •               Symbol: Ca

                  •               Atomic Number: 20

                  •               Number of Electrons: 20

                  •               Number of Protons: 20

                  •               Mass Number: 40

                  •               State of the Element: Metal

                  •               Electron Configuration: 2:8:8:2

                  •               Energy Levels:

                  •               2 electrons in the 1st energy level

                  •               8 electrons in the 2nd energy level

                  •               8 electrons in the 3rd energy level

                  •               2 electrons in the 4th energy level