Geometry and hybridisation

Which of the following angle corresponds to sp² hybridisation?

• 90°

• 120°

• 180°

• 109°

H₂O is dipolar, whereas BeF₂ is not. It is because

• The electronegativity of F is greater than that of O

• H₂O involves hydrogen bonding whereas BeF₂ is a discrete molecule

• H₂O is linear and BeF₂ is angular

• H₂O is angular and BeF₂ is linear

Predict the correct order among the following :

• Bond pair - bond pair > lone pair - bond pair > lone pair - lone pair

• Lone pair - bond pair > bond pair - bond pair > lone pair - lone pair

• Lone pair - lone pair > lone pair - bond pair > bond pair - bond pair

• Lone pair - lone pair > bond pair - bond pair > lone pair - bond pair

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

• H₂O

• BF₃

• NH₃

• CO₂

Which one of the following molecules contains no pi bond?

• SO₂

• NO₂

• CO₂

• H₂O

A molecule has two lone pairs and two bond pairs around the central atom. The molecule shape is expected to be

• V-shaped

• triangular

• Linear

• Tetrahedral

The nature of hybridisation in the ammonia molecule is

• sp2

• sp2d

• sp

• sp3

The types of hybridisation of the five carbon atoms from left to right in the molecule CH₃ — CH = C = CH — CH₃ are

• sp3 , sp2 , sp2 , sp2 , sp3

• sp3 , sp, sp2 , sp2 , sp3

• sp3 , sp2 , sp, sp2 , sp3

• sp3 , sp2 , sp2 , sp, sp3

Two carbon atoms form a linear shaped ethene, C₂H₄, molecule when bonded with four other hydrogen atoms. Prior to bonding, the carbon atom

• does not hybridise

• undergoes sp hybridisation

• undergoes sp² hybridisation

• undergoes sp³ hybridisation

The molecule that uses sp³d hybrid orbital on the central atom is

• BCl₃

• NCl₃

• ICl₃

• PCl₃