Molecular Structure Homework Checks

Which factor DOES NOT contribute to the molecular geometry (shape) of a covalent molecule?

• the number of bonded atoms

• the number of unbonded pairs of electrons

• bond angle

• nuclear charge

Which groups of central atoms are capable of forming 5 and 6 charge cloud geometries?

• N, P, As

• S, Se, Te

• F, Cl, Br

• Br, S, N

How do lone pairs of electrons on the central atom affect the bond angle?

• Lone pairs create larger bond angles.

• Lone pairs create smaller bond angles.

• Lone pairs do not affect the bond angles.

What is the molecular geometry of CH₄?

• Linear

• Trigonal planar

• Square planar

• Tetrahedral

How does the molecular geometry of CH₄ compare with the electron geometry of NH₃?

• The molecular geometry of CH₄ is square planar, while electron geometry of NH₃ is trigonal pyramidal.

• The molecular geometry of CH₄ is tetrahedral, while electron geometry of NH₃ is trigonal planar.

• The molecular geometry of CH₄ is tetrahedral, while electron geometry of NH₃ is bent.

• They are the same.

Which molecule has a trigonal planar molecular geometry?

• NH₃

• BCl₃

• ClF₃

• SBr₃

What is the electron geometry of XeBr₂?

• bent

• tetrahedral

• trigonal bipyramidal

• linear

What is the molecular geometry of XeBr₂?

• bent

• tetrahedral

• trigonal bipyramidal

• linear

Which molecule fits the AB₄E notation - meaning the central atom has 4 bonding pairs of electrons and 1 lone pair of electrons?

• SF₄

• NBr₅

• PBr₅

• OCl₅

Which molecular geometry describes the ion CO₃^2-?

• Linear

• Trigonal planar

• Tetrahedral

• Bent