(c) Among halides, lithium iodide is the most covalent in nature. Why?
(d) Write the name and formula of two peroxoacids of sulphur.
(et What example. are pseudohalogens? Give
What are silanes? Give examples.
5. Answer any five of the following questions :
3x5=15
Write one method of preparation and one use of boric acid.
2+1=3
(b) Explain the bonding and structure of B₂H6.
2+1=3
Draw the electronic structure of HNO3, N2O4 and HNO2. 1+1+1=3
What are interhalogen compounds? Predict the geometry of CIF3 and IF7.