Write down the names of the following complexes:
i) 
ii) [CoCl (NO2) (en)2] Cl
iii) K2(PtCl6]
i)Ferrous hydroxide
ii)Cobalt di
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Which metals are called class ‘a’ elements or ‘hard acids’ and why?
Write down the names of the following complexes:
i)
ii) [CoCl (NO2) (en)2] Cl
iii) K2(PtCl6]
Why boric acid is a very weak monobasic acid (pH = 9.25)? Explain with suitable equation.
Write the reactions for the following:
i) Reaction showing acidic behaviour of sulphur dioxide
ii) Reaction depicting the sulphonation by H2SO4
iii) Reactions of lead chambers during the manufacture of H2SO4 by Lead Chamber process
iv) Reaction distinguishing between peroxomonosulphuric acid and peroxodisulphuric acid
v) Reduction reaction of H2O2 with chlorine
Describe Moissan’s method for the isolation of fluorine. Give the modifications done in the original method.
Explain giving suitable structures why ionic azides are more stable than covalent azides.
How does the electronic configuration of ions vary with the configuration of their isoelectronic atoms. Explain by taking two examples. Indicate the electronic configuration of ions along the series.