Coordination Co...

Which is correct statement?
As the s-character of a hybrid orbital decreases
(I) The bond angle decreases        (II) The bond strength increases
(III) The bond length increases    (IV) Size of orbital increases

$$[CoCl_{2}(NH_{3})_{4}]^{+} + Cl^{-}\rightarrow [CoCl_{3}(NH_{3})_{3}] + NH_{3}$$. If in this reaction two isomers of the product are obtained, which is true for the initial (reactant) complex:

A complex which is formed by chloride and nitrate ligand gives two moles of precipitate of $$ AgCl $$ with $$ AgNO_3 $$. Its molecular formula will be 

Consider the following compounds and select the incorrect statement from the following :
    $$NH_{3}, PH_{3}, H_{2}S, SO_{2}, SO_{3}, BF_{3}, PCl_{3}, IF_{7}, P_{4}, H_{2}$$

Which of the following match are incorrect?

Chlorophyll contains 

Mark the incorrect match.

Which of the following isomers will give while precipitate with $$BaCl_{2}$$ solution?

Which among the following will be named as dibromobis(ethylenediamine) chromium $$(III)$$ bromide?

Geometrical shapes of the complexes formed by the reaction of $$Ni^{2+}$$ with $$Cl^-, CN^-$$ and $$H_2O$$, respectively, are: