what are important questions in p-block, which should not be taken granted?
[B] COMPARE AND CONTRAST THE FOLLOWING:
- Oxidation states of tin and lead
- Structures of oxides of nitrogen and phosphorus
- Electron affinities of chlorine and fluorine
- Maximum covalency of oxygen and sulphur
- Give the comparative account of the chemistry of carbon and silicon with regard to their:
[i] property of catenation
[ii] stability of hydrides and oxides
- Account for the following:
[i] Ammonia has higher boiling point than phosphine
[ii] Trimethyl ammine is pyramidal and trisilyl ammine is planar.
[iii] Ammonia is stronger base than phosphine.
- Describe the following about halogen family:
[i] Oxidising power
[ii] Relative strength of their hydrides
[iii] Oxyacids and their related oxidising ability
- Give reason for the following observations.
[i] Noble gases are mostly chemicallly inert
[ii] Nitrogen does not form pentahalide
[iii] Bismuth is a strong oxidising agent in pentavalent state
- [i] Discuss two similar and two dissimilar properties from the chemistry of nitrogen and that of phosphorous.
[ii] State the reason for the occurrence of diagonal relationship in the periodic table