Molecular Geometry Basics

Which of the following statements is/are correct about the Lewis structure of water?

• Oxygen is the central atom.

• The electron geometry of the water is tetrahedral.

• There are two lone pairs of electrons (nonbonding).

• There are four electron groups (steric groups) around oxygen atom.

  bonding group = 2

  lone pairs = 2

• All of the above are correct.

Which of the following is/are considered an electron group?

• each lone pair of electrons on the central atom

• Each bond

• All of the above.

There are ​ (a)  

There is one ​ (b)  

The electron geometry of this molecule is​ (c)  

The molecular geometry of ammonia is​ (d)  

• three bonding groups.
• lone pair of electrons.
• tetrahedral.
• trigonal pyramid.

There are four​ (a)  

There are two​ (b)  

The electron geometry of this compound is ​ (c)  

The molecular geometry of this compound is ​ (d)  

• bonding groups.
• lone pairs of electrons.
• octahedral.
• square planar.
• trigonal planar.

How many electron groups are there for the sulfur atom? ​ (a)  

What is the electron geometry of the sulfate ion? ​ (b)  

What is the molecular geometry of the sulfate ion? ​ (c)  

• four
• tetrahedral
• trigonal bipyramidal

A linear molecule has only ​ (a)  

A trigonal planar molecule has only ​ (b)  

A tetrahedral molecule has only ​ (c)  

A trigonal bipyramidal molecule has only ​ (d)  

An octahedral molecule has only ​ (e)  

• two electron groups.
• three electron groups.
• four electron groups.
• five electron groups.
• six electron groups.
• seven electron groups.

What is the molecular geometry of SF₄ ?

• tetrahedral

• trigonal bipyramid

• seesaw

• octahedral

• square pyramid

What is the molecular geometry of this molecule?

• linear

• trigonal planar

• tetrahedral

• bent

Which of the following statements is/are true about methane gas (CH₄)?

• Electron geometry is tetrahedral.

• Molecular geometry is tetrahedral.

• there are four bonding groups.

• All of the above.

What is the electronic geometry of XeF₂ molecules? ​ (a)  

What is the molecular geometry of XeF₂ molecule? ​ (b)  

• trigonal bipyramid
• linear
• octahedral