Write the atomic mass of 30 elements.
Answers
Answer:
Element Atomic Number Atomic Mass Valency
Hydrogen 1 1 .0079 -1, +1
Helium 2 4.0026 0
Lithium 3 6.941 +1
Beryllium 4 9.0122 +2
Boron 5 10.811 -3, +3
Carbon 6 12.0107 +2, +4
Nitrogen 7 14.0067 -3, -2, -1,+,1+2,+3,+4,+5
Oxygen 8
15.9994 -2
Fluorine 9 18.9984 -1, +1
Neon 10 20.1797 0
Sodium 11 22.9897 +1
Magnesium 12 24.305 +2
Aluminum 13 26.9815 +3
Silicon 14 28.0855 -4, (+2), +4
Phosphorus 15 30.9738 -3, +1, +3, +5
Sulfur 16 32.065 -2, +2, +4, +6
Chlorine 17 35.453 -1,+1, +2,+3,+4,+5,+7
Argon 18 39.0983 0
Potassium 19 39.948 +1
Calcium 20 40.078 +2
Scandium 21 44.9559 +3
Titanium 22 47.867 +2,+3,+4
Vanadium 23 50.9415 +2,+3,+4,+5
Chromium 24 51.9961 +2, +3, +6
Manganese 25 54.938 +2,+3,+4,+6,+7
Iron 26 55.845 +2,+3,+4,+6
Nickel 27 58.6934 +2, +3,+4
Cobalt 28 58.9332 +1,+2,+3,+4
Copper 29 63.546 +1, +2,+3
Zinc 30 65.39 +2
Hydrogen H 1
Helium He 4
Lithium Li 7
Berellium Be 9
Boron B 10
Carbon C 12
Nitrogen N 14
Oxygen O 16
Fluorine F 19
Neon Ne 20
Sodium Na 23
Magnesium Mg 24
Aluminium Al 27
Silicon Si 28
Phosphorus P 31
Sulphur S 32
Chlorine Cl 35.5
Argon Ar 40
Potassium K 39.9
Calcium Ca 40
Scandium Sc
Titanium Ti
vanadium V
chromium Cr
Manganese Mn
Iron Fe
Cobalt Co
Nickel Ni
Copper. Cu
Zinc Zn