THE p -BLOCK ELEMENTS - NCERT
reactive non-metals with highly reactive metals ... However, the coordination number in species of heavier elements may be higher than for ... crust (8.3% by mass) after oxygen (45.5%) and Si (27.7%). Bauxite, Al 2O3. 2H 2O and cryolite, Na3AlF6 are the important minerals of aluminium. In India it is found as mica in
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