Question1) Answer all the questions:
i) Describe structure of biborance B2H6, and types of bond present.
ii) Describe the composition of fresh air and give the detail of main air polluting gases.
iii) Explain Pearson’s HSAB concept?
iv) Describe silicons with the structure of three silicons.
v) Give two preparation methods of Aryl halides.
Question2) Explain paramagnatism, diamagnetism, ferromagnetism and antiferromagnetism with appropriate diagrams and examples.
Question3) Write down the formulae for the mononuclear carbonycs formed by V, Cr, Fe and Ni.
Question4) Write brief notes on the following :
(a) Radioactive pollution and examples from 20th century radioactive pollution in world.
(b) Soil pollution and effect on agriculture.