Saturday, April 26, 2014

CLASS 10TH  CHEMICAL BOND BITS
1. Sharing of electrons between two atoms leads to the formation of _______ bond.
2. _____ type overlap is present in F2
3. NH3 has _______ shape.
4. N2 has _______ sigma and _______ ð bonds.

5. Oxygen has _______ lone pairs of electrons in water molecule.
6. Formation of chemical bond involves _______ of electrons.
7. Bond strengths arise due to the _______of the valence orbitals that overlap.
8. In water, after the bond formation the oxygen atom is left with _______ lone pair of electrons.
9. Phosphorous has _______ lone pair of electrons in PCl3
10. Boron trifluoride (BF3) has _______ shape.
11. A molecule is _______ stable than the atoms present in it.
12. _______ bond is found in the Ammonium (NH4
+) ion.
13. _______ type of overlap is present in H2
14. Molecules having single bonds have only _______ bonds.
15. In the coordinate covalent bond, both the electrons are supplied by _______
16. In a double bond _______ sigma (ó) and _______ pi (ð) bond are present.
17. Sigma (ó) bond is _______ than pi (ð) bond.
18. HCN has _______ structure.
19. In C2H2 (Acetylene) bonds there in between carbon and carbon.
20. s-s overlap is present in _______
21. p-p overlap is present in _______
22. s-p overlap is present in _______

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