Question
Metals and Non - metals. (based on chemical properties)
| Metals | Non - metals |
| (i) Atoms of metals usually have 1, 2 or 3 electrons in their outermost orbit | (i) Atoms of non - metals usually have 4, 5, 6 or 7 electrons in their outermost orbit. |
| (ii) Metals lose electrons from their outermost orbits to form positive ions. | (ii) Non - Metals gain electrons to form negative ions. |
| (iii) Metals are electro positive | (iii) Non - metals are electro negative |
| (iv) Mostly metals form basic oxides. | (iv) Non - metals form acidic oxides. |
| (v) Metals are reducing agents. | (v) Non - Metals are oxidizing agents. |
| (vi) Metals displaces hydrogen from dilute acids and form the corresponding salts. | (vi) Non - metals generally do not react with dilute mineral acids |
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