what are the first 20 elements in the periodic table in order along with thier atomic and mass number?

Following is the list of first 20 elements with their names, symbols, atomic numbers and mass numbers 

 

ElementSymbolAtomic numberMass number
HydrogenH11
HeliumHe24
LithiumLi37
BerylliumBe49
BoronB511
CarbonC612
NitrogenN714
OxygenO816
FluorineF919
NeonNe1020
SodiumNa1123
MagnesiumMg1224
AluminiumAl1327
SiliconSi1428
PhosphorusP1531
SulphurS1632
ChlorineCl1735
ArgonAr1840
PotassiumK1939
CalciumCa2040

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  1. Hydrogen [H] - Atomic mass = 1
  2. Helium [He]- Atomic mass = 4
  3. Lithium [Li]- Atomic mass = 7
  4. Beryllium [Be]- Atomic mass = 9
  5. Boron [B]- Atomic mass = 11
  6. Carbon [C]- Atomic mass = 12
  7. Nitrogen [N]- Atomic mass = 14
  8. Oxygen [O]- Atomic mass = 16
  9. Fluroine [F]- Atomic mass = 19
  10. Neon [Ne]- Atomic mass = 20
  11. Sodium [Na]- Atomic mass = 23
  12. Magnesium [Mg]- Atomic mass = 24
  13. Aluminium [Al]- Atomic mass = 27
  14. Silicon [Si]- Atomic mass = 28
  15. Phosphorus [P]- Atomic mass = 31
  16. Sulphur [S]- Atomic mass = 32
  17. Chlorine [Cl]- Atomic mass = 35
  18. Argon [Ar]- Atomic mass = 40
  19. Potassium [K]- Atomic mass = 39
  20. Calcium [Ca]- Atomic mass = 40
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  1. Hydrogen [H] - Atomic mass = 1,Atomic no.= 1
  2. Helium [He]- Atomic mass = 4,Atomic no.=2
  3. Lithium [Li]- Atomic mass = 7,Atomic no.= 3
  4. Beryllium [Be]- Atomic mass = 9,Atomic no.=4
  5. Boron [B]- Atomic mass = 11,Atomic no.=5
  6. Carbon [C]- Atomic mass = 12,Atomic no.=6
  7. Nitrogen [N]- Atomic mass = 14,Atomic no.=7
  8. Oxygen [O]- Atomic mass = 16,Atomic no.=8
  9. Fluroine [F]- Atomic mass = 19,Atomic no.=9
  10. Neon [Ne]- Atomic mass = 20,Atomic no.=10
  11. Sodium [Na]- Atomic mass = 23,Atomic no.=11
  12. Magnesium [Mg]- Atomic mass = 24,Atomic no.=12
  13. Aluminium [Al]- Atomic mass = 27,Atomic no.=13
  14. Silicon [Si]- Atomic mass = 28,Atomic no.=14
  15. Phosphorus [P]- Atomic mass = 31,Atomic no.=15
  16. Sulphur [S]- Atomic mass = 32,Atomic no.=16
  17. Chlorine [Cl]- Atomic mass = 35,Atomic no.=17
  18. Argon [Ar]- Atomic mass = 40,Atomic no.=18
  19. Potassium [K]- Atomic mass = 39,Atomic no.=19
  20. Calcium [Ca]- Atomic mass = 40,Atomic no.=20
  • 1

  1. Hydrogen [H] - Atomic mass = 1,Atomic no.= 1
  1. Helium [He]- Atomic mass = 4,Atomic no.=2
  2. Lithium [Li]- Atomic mass = 7,Atomic no.= 3
  3. Beryllium [Be]- Atomic mass = 9,Atomic no.=4
  4. Boron [B]- Atomic mass = 11,Atomic no.=5
  5. Carbon [C]- Atomic mass = 12,Atomic no.=6
  6. Nitrogen [N]- Atomic mass = 14,Atomic no.=7
  7. Oxygen [O]- Atomic mass = 16,Atomic no.=8
  8. Fluroine [F]- Atomic mass = 19,Atomic no.=9
  9. Neon [Ne]- Atomic mass = 20,Atomic no.=10
  10. Sodium [Na]- Atomic mass = 23,Atomic no.=11
  11. Magnesium [Mg]- Atomic mass = 24,Atomic no.=12
  12. Aluminium [Al]- Atomic mass = 27,Atomic no.=13
  13. Silicon [Si]- Atomic mass = 28,Atomic no.=14
  14. Phosphorus [P]- Atomic mass = 31,Atomic no.=15
  15. Sulphur [S]- Atomic mass = 32,Atomic no.=16
  16. Chlorine [Cl]- Atomic mass = 35,Atomic no.=17
  17. Argon [Ar]- Atomic mass = 40,Atomic no.=18
  18. Potassium [K]- Atomic mass = 39,Atomic no.=19
  19. Calcium [Ca]- Atomic mass = 40,Atomic no.=2

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