Yr 13 AQA Bonding

Which species has a shape that is influenced by the presence of one or more lone pairs of electrons around the central atom?

• AlCl₃

• ClF₃

• IF₆⁺

• PCl₆^–

Which is the most likely bond angle around the oxygen atom in ethanol?

• 104.5°

• 109.5°

• 120°

• 180°

Which of these species has a trigonal planar structure?

• PH₃

• BCl₃

• H₃O⁺

• CH₃⁻

Which one of the following is the most likely value for the bond angle α shown in the diagram of SF₄?

• 118°

• 101°

• 90°

• 88°

Which of the following does not determine the shape of a molecule?

• electron pairs around the central atom

• lone pair of electrons on other attached atoms

• lone pair of electrons around the central atom

• number of attached atoms

Which pairs of electrons around a central atom in a molecule have the greatest repulsion?

• lone pair to lone pair

• lone pair to bond pair

• bond pair to bond pair

• bond pair to lone pair

What name is given to the shape shown in the picture?

• bent

• trigonal planar

• triangular

• trigonal pyramidal

Which of the following shapes is planar?

• 
• 
• 
• 

What is the approximate bond angle in nitrogen fluoride, NF₃?

• 90^o

• 120^o

• 107^o

• 60^o

Which of the following simple molecular

substances does NOT obey octet rule?

• SF₆

• PF₃

• CH₃Cl

• CO₂