Chemical Bonding

Question 1

Bond order for unimolecular species

Answer 1

8. 0
9. 0.5
10. 1
11. 1.5
12. 2
13. 2.5
14. 3
    15 2.5
15. 2
16. 1.5
17. 1
18. 0.5
19. 0

Question 2

Bond order for multiple species

Answer 2

1+σ/π

Question 3

Formal charge

Answer 3

= (total no of valence electrons in the free atom)-(total number of non bonding (lone pair) electrons)-(1/2)(total number of bonding (bond pair) electrons)

Question 4

shapes of molecules

Answer 4

AB linear
AB2 linear
AB3 trigonal planar
AB4 tetrahedral
AB5 trigonal bipyramidal
AB6 octahedral

Question 5

Shapes and hybridization

Answer 5

sp linear
sp2 bent
sp3 tetrahedral
dsp2 square planar
sp3d trigonal bipyramidal
sp3d2 square pyramid
sp3d2 octahedral
or
d2sp3

Question 6

Increasing order of molecular orbitals

Answer 6

σ1s<σ1s< σ2s<σ2s<(π2px=π2py)<σ2px<(π2px=π2py)<σ*2pz