Calculate the minimum emf required to carry out the electrolysis of Al 2 O 3 . Given that ?G? f (Al 2 O 3 ) = 827 kJ mol 1 of O 2 involved. Faradays constant (F) = 96500 C mol 1 Write the chemical formula of fluorapatite. The ionization enthalpy of group 15 elements is much higher than those of corresponding elements of group 14 why? Maximum covalence of Nitrogen is 4 but the heavier elements of Group 15 show covalence greater than 4 Why? Why does nitrogen from diatomic molecule?
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