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first 20 elements periodic table
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Cards (20)
1.
H – Hydrogen.
2.
He – Helium.
3.
Li – Lithium.
4.
Be – Beryllium.
5.
B – Boron.
6.
C – Carbon.
7.
N – Nitrogen.
8.
O – Oxygen.
9.
F – Fluorine.
10.
Ne – Neon.
11.
Na – Sodium.
12.
Mg – Magnesium.
13.
Al – Aluminium.
14.
Si – Silicon.
15.
P – Phosphorus.
16.
S – Sulphur.
17.
Cl – Chlorine.
18.
Ar – Argon.
19.
K – Potassium.
20.
Ca – Calcium