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The primary valence of the metal in binary salts CrCl3, CoCl2 and PdCl2 respectively is
A2, 3 and 3
B3, 3 and 2
C3, 2 and 2
D2, 2 and 3
Answer & Solution
Correct answer: C. 3, 2 and 2
Primary valence equals the oxidation state, which is 3 for Cr, 2 for Co and 2 for Pd in these chlorides.
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