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Given the molecular formula of the hexa coordinated complexes
\( \mathrm{P} \)
(A) \( \mathrm{CoCl}_{3} .6 \mathrm{NH}_{3} \)
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(B) \( \mathrm{CoCl}_{3}, 5 \mathrm{NH}_{3} \)
(C) \( \mathrm{CoCl}_{3}, 4 \mathrm{NH}_{3} \)
If the number of co-ordinated \( \mathrm{NH}_{3} \) molecules in \( \mathrm{A}, \mathrm{B} \) and \( C \) respectively are 6, 5 and 4 , the primary valency in (A), (B) and (C) are:
(1) \( 6,5,4 \)
(2) \( 3,2,1 \)
(3) \( 0,1,2 \)
(4) \( 3,3,3 \)
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