2) Bonding

Question 1

D) EN difference of ionic, polar cov and non polar cov

Answer 1

ionic: between 2-4
polar cov: between 0.3-2
nonpolar cov: between 0-0.3

Question 2

E) formal charge

Answer 2

F = no of valence e- in the free atom - 1/2 (no. of bonding - no. of nonbonding e-)

Question 3

D) Octet rule tips

Answer 3

C,N,O and F: Always obey rule
B and Be: Usually sub-octet
2nd period: Never exceeds octet
3rd period and beond: Can use valence shell expansion to exceed octet

Question 4

E) bond order

Answer 4

= (no of bonding - no of antibonding e-) / 2

Question 5

D) 2 charge clouds

Answer 5

Linear, 180°

Question 6

D) 3 charge clouds

Answer 6

trigonal planar, 120°
Bent (1 lp)

Question 7

D) 4 charge clouds

Answer 7

Tetrahedral, 109.5°
Trigonal pyramidal (1 lp), 107°
Bent (2 lp), 104.5°

Question 8

D) 5 charge clouds

Answer 8

Trigonal bipyramidal, 90 and 120°
Seesaw (1 lp)
T-shaped (2 lp)
Linear (3 lp)

Question 9

D) 6 charge clouds

Answer 9

Octahedral, 90°
Square pyramidal (1 lp)
Square planar (2 lp)