Lovely Professional University 2009 B.Tech Information Technology Assignment 1- Chemistry - Question Paper

CHE151 Assignment -1
1. Why atoms of higher ionization potential forms covalent bond?

2. Why covalent compounds have a particular geometry and posses is isomerism?

3. Compare the melting points of ionic compounds and covalent compounds and discuss the cause in brief.

4. In case of Be ,B, and C they have only 0,1 and two unpaired electron respectively but they have a covalency of 2,3 and four respectively .Explain with the help of orbitals.

5. Why AlF63- , Pcl5 exist but BF63-,and Ncl5 doesn’t exist?

6. Why Sicl4 hydrolyses but Ccl4 doesn’t hydrolyses in water? discuss the steps involved in hydrolysis?

7. Why SF6 and SeF6 don’t hydrolyse but TeF6 hydrolyses?

8. Write a short notes on VBT.

9. Compare the bond order , stability ,magnetic character of O2,O2+.O2-,O22-. write them in increasing order of bond order.

10. Draw all the possible geometry of clF2 .which is the most stable?
Draw structures of subsequent compounds a)XeF4 b)XeF6 c)XeO3 d)XeoF2 e)XeoF4

Earning:   Approval pending.