Periodic table (20 elements) Flashcards
1) Hydrogen
Atomic symbol = H
Atomic number = 1
Mass number = 1
2) Helium
Atomic symbol = He
Atomic number = 2
Mass number = 4
3) Lithium
Atomic symbol = Li
Atomic number = 3
Mass number = 7
Beryllium
Atomic symbol = Be
Atomic number = 4
Mass number = 9
5) Boron
Atomic symbol = B
Atomic number = 5
Mass number = 11
6) Carbon
Atomic symbol = C
Atomic number = 6
Mass number = 12
7) Nitrogen
Atomic symbol = N
Atomic number = 7
Mass number = 14
8) Oxygen
Atomic symbol = O
Atomic number = 8
Mass number = 16
9) Fluorine
Atomic symbol = F
Atomic number = 9
Mass number = 19
10) Neon
Atomic symbol = Ne
Atomic number = 10
Mass number = 20
Sodium
Atomic symbol = Na
Atomic number = 11
Mass number = 23
Magnesium
Atomic symbol = Mg
Atomic number = 12
Mass number = 24
Aluminium
Atomic symbol = Al
Atomic number = 13
Mass number = 27
Silicon
Atomic symbol = Si
Atomic number = 14
Mass number = 28
Phosphorus
Atomic symbol = P
Atomic number = 15
Mass number = 31
16) Sulphur
Atomic symbol = S
Atomic number = 16
Mass number = 32
17) Chlorine
Atomic symbol = Cl
Atomic number = 17
Mass number = 35
18) Argon
Atomic symbol = Ar
Atomic number = 18
Mass number = 40
19) Potassium
Atomic symbol = K
Atomic number = 19
Mass number = 39
20) Calcium
Atomic symbol = Ca
Atomic number = 20
Mass number = 40
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