In the modern periodic table, which are metals, non-metals and metalloids among the first twenty elements.

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Solution

1) Hydrogen :Non metal
2) Helium :Non metal
3) Lithium : Metal
4) Beryllium :Metal
5) Boron :Metalloid
6) Carbon :Non metal
7) Nitrogen :Non metal
8) Oxygen :Non metal
9) Fluorine :Non metal
10) Neon :Non metal
11) Sodium : Metal
12) Magnesium : Metal
13) Aluminium : Metal
14) Silicon :Metalloid
15) Phosphorous :
16) Sulphur : Non metal
17) Chlorine :Non metal
18) Argon :Non metal
19) Potassium : Metal
20) Calcium : Metal

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