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In inorganic chemistry and especially in binary compounds they have the habit to use an order based on electronegativity: the least ...
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https://drive.google.com/file/d/0B0j8xA2-VWfobnVCcVpuM2gtRW1QY1RfaEdudnBIRE1xVlV3/view https://drive.google.com/file/d/0B0j8xA2-VWfobnVC...
