Topic 14: Bonding & Structure (HL only)

Which contain delocalized electrons?

1: C₆H₅CH₃

2: CO₃^2-

3: HCOO^-

• 1 and 3 only

• 2 and 3 only

• 1 and 2 only

• 1, 2 and 3

Answer explanation

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which correctly describes the molecular geometry in BrF₃?

• trigonal planar

• trigonal bipyramidal

• trigonal pyramidal

• T-shaped

Answer explanation

Which correctly describes the electron domain geometry and the molecular geometry, respectively, in BrCl₄^-?

• octahedral and tetrahedral

• octahedral and square planar

• tetrahedral and square planar

• tetrahedral and tetrahedral

Answer explanation

Which atom is sp² hybridized?

• nitrogen in NH₃

• carbon in CO₂

• carbon in H₂CO

• oxygen in CO

Answer explanation

How many carbon atoms (grey) are sp³, sp² and sp hybridized in the molecule shown?

• 2 sp³ carbons; 2 sp² carbons; 0 sp carbons

• 1 sp³ carbon; 2 sp² carbons; 1 sp carbon

• 1 sp³ carbon; 1 sp² carbon; 2 sp carbons

• 2 sp³ carbons; 1 sp² carbon; 1 sp carbon

Answer explanation

Tags

NGSS.HS-PS1-3

How many sigma (σ) and pi (π) bonds are there in ethanitrile (CH₃CN)?

• 4 sigma and 3 pi

• 6 sigma and 1 pi

• 4 sigma and 2 pi

• 5 sigma and 2 pi

Answer explanation

Tags

NGSS.HS-PS1-1

What is the hybridization of the oxygen and two nitrogen atoms circled?

• 1st N is sp²; 2nd N is sp²; O is sp²

• 1st N is sp³; 2nd N is sp³; O is sp²

• 1st N is sp²; 2nd N is sp³; O is sp³

• 1st N is sp; 2nd N is sp²; O is sp

Answer explanation

Tags

NGSS.HS-PS1-1

Which species has a square pyramidal molecular geometry?

• BrF₄^-

• PF₅

• SiH₄

• BrF₅

Answer explanation

How many sigma (σ) and pi (π) bonds are present in this molecule?

• 12 sigma and 3 pi

• 11 sigma and 4 pi

• 9 sigma and 3 pi

• 8 sigma and 4 pi

Answer explanation

Which species does not have a bond angle of 90°?

• GeF₄

• SF₆

• XeF₄

• SF₄

Answer explanation