How would you account for the following ? Many of the transition elements are known to form interstitial compounds.
In the crystal lattice, transition elements have interstitial vacant space into which small sized nonmetal atoms such as H, B, C, or N are trapped. These compounds are non-stoichiometric, neither typically ionic nor covalent. e.g., TiC, MH, Fe₃H etc.
Assign the reason for the following :
Copper (I) ion is not known in aqueous solution.
What are the transition elements ? Write two characteristics of the transition elements.
Explain the following observation :
Most of the transition metal ions exhibit characteristic colour in aqueous solution.
Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.
Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number.
What is meant by ‘disproportionation’ ? Give an example of a disproportionation reaction in aqueous solution.
Complete and balance the following chemical equations:
(a) Fe²⁺ + MnO₄⁻ + H⁺ →
(b) MnO₄⁻ + H₂O + I⁻ →
What type of intermolecular attractive interaction exists in the pair of methanol and acetone ?
Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.