1.

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

Answer»

The metals, non metals and metalloids among the first twenty elements of the modern periodic table are as follows: Metals: Lithium (Li), Berylium (Be), Sodium (Na), Magnesium (Mg), Aluminium (Al), Potassium (K), Calcium (Ca) 

Non-metals: Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Phosphorus (P), Sulphur (S), Chlorine (Cl) 

Metalloids: Boron (B), Silicon (Si)



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