67. Which could be a description of a pi (m) bond? (A) the overlap of two sp hyb

Question

67. Which could be a description of a pi (m) bond? (A) the overlap of two sp hybrid orbitals (B) the overlap of a sp hybrid orbital with a ls atomic (Co the overlap of two Is atomic orbitals (D) the overlap of two 2p atomic orbitals 68. The molecular orbital ais energy diagram for He is a shown. What is the bond D order of He (B) (C) D) 0 (A) 2 69. How many sigma (o) and pi (T) bonds are in one H cs c C o H molecule of benzoic acid (B) 11 o (A) 11 0.8 (D) 15 ,4 (C) 15 .8 x 70. Which correctly shows a hydrogen bond between two molecules of methanol? The hydrogen bond is represented as a dashed line. (B) (A) H ,H, H-C-O O-C-H (D) H H H-c-o' H-c-o H-c-o o-C-H END OF TEST

Explanation / Answer

67) The pi bond is formed by the sideways overlap of p-orbital

68)The bond order can be calcualted as

BO = Bonding electron - antibonding electron / 2

BO = 2-0 / 2 = 0

69 ) The number of sigm bonds are : 15

pi bonds = 4

70 )The hydrogen bond is formed between hydrogen bonded to oxygen atom and other oxygen atom

So correct answer is

C

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