S2-Q3-U3- VBT - MOT

how many valence electron(s) in dot system of Br₃₅

• 5

• 1

• 7

• 3

By considering the shape of the individual units that make up the macromolecule in the diagram, which type of hybridization is occurring in the carbon atoms of graphene?

• SP³

• SP²

• SP

• SP³D

In the following diagrams, hybrid orbitals of an excited carbon atom are colored green and nonhybridized orbitals are colored black.

Which diagram shows sp² hybridization?

• 
• 
• 

In the following diagrams, hybrid orbitals of an excited carbon atom are colored green and nonhybridized orbitals are colored black.

Which diagram shows sp hybridization?

• 
• 
• 

What molecular shape is associated with Sp² hybridization ?

• Square planar

• Trigonal planar

• Linear

• Tetrahedral

When an atom undergoes spⁿ hybridization, how many hybrid orbitals are formed?

• 𝑛 hybrid orbitals

• 𝑛−1 hybrid orbitals

• 𝑛+1 hybrid orbitals

• no definite relation

Which of the following are the correct types of hybridization for carbons a and b in the compound shown?

• Carbon a: sp,carbon b: sp²

• Carbon a: sp²,carbon b: sp

• Carbon a: sp³,carbon b: sp²

• Carbon a: sp²,carbon b: sp³

Which of the following is NOT true about the hybridisation of orbitals?

• The number of atomic orbitals combined always equals the number of hybrid orbitals formed.

• The hybridised orbitals are different in energies and shape from the originals orbitals

• The hybridisation should take place after the excitation

• The number of atomic orbitals combined may be different from the number of hybrid orbitals formed.

How many 𝜎 bonds and 𝜋 bonds are in 1,4-pentadiene ?

• 2 𝜎 bonds and 12 𝜋 bonds

• 10 𝜎 bonds and 2 𝜋 bonds

• 12 𝜎 bonds and 2 𝜋 bonds

• 2 𝜎 bonds and 10 𝜋 bonds

What is the angle between the hybrid orbitals of the carbon atom in HCN? [C=6,N=7,H=1].

• 90°

• 109.5°

• 180°

• 120°