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In which of the following will the ionic radii of chromium be the smallest


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Oxidation number of Cr in options a, b, c and d are +6, + 4, + 3, + 3 respectively. In given options $K_2Cr_2O_4$ has high oxidation number therefore its radii will be low. Atomic radii decreases with increase in oxidation no.
answered Jan 30, 2014 by sreemathi.v
edited Aug 2, 2014 by balaji.thirumalai

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