Class XI Chemistry Chemical Bonding and Molecular Structure 5

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Question 1

The Lewis acidity of is less than even though fluorine is more electronegative than chlorine. It is due to

• Astronger 1p(B)–3p (Cl) σ - bonding
• Bstronger 2p(B)-3p(Cl) π - bonding
• Cstronger 2p(B)–2p (F) σ - bonding
• Dstronger 2p(B)–2p(F) π – bonding

Question 2

Shape of molecule AB₅ having 5 bond pair is

• ATetrahedral
• BTrigonal bipyramidal
• Csquare pyramidal
• Dnone of these

Question 3

Which atom, when bonded to hydrogens, will not be sp³ hybridized at the central carbon?

• AB
• BC
• CN
• DO

Question 4

Which of the following species contains three bond pairs and one lone pair around the central atom?

• AH₂O
• BBF₃
• CNH^-₂
• DPCl₃

Question 5

In which one of the following species the central atom has the type of hybridization which is not the same as that present in the other three ?

• ASF₄
• B
• C
• DPCl₅

Question 6

Which of the following statements are correct-
1) Bond order of NO =2.5
2) Bond order of NO⁺ =1
3) Bond order of CO₃^2- =1.75
4) Bond order of O₂ =2

• A1, 2
• B2, 3, 4
• C1, 4, 3
• D1, 4

Question 7

Which one of the following has the strongest O-O bond?

• AO₂⁺
• BO₂
• CO₂^-
• DO₂^2-

Question 8

If geometry is linear, trigonal planar and tetrahedral then unhybridized p orbital will have values?

• A2, 1, 0
• B1, 1, 0
• C1, 2, 0
• D1, 1, 2

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