Lewis Structures and Molecular Geometry

The effect of lone pairs of electrons on molecular geometry is

• to push other atoms closer together because lone pairs are

  localized on only one nucleus, so they spread out more.

• to allow the other atoms to be further apart because lone pairs

  take up less space than bonding pairs.

• to create an aysmmetical distribution of the electrons within

  the atom, thus creating a polar molecule by creating dipoles.

• to help to create resonance structures through the formation of

  pi bonds.

The carbon atom undergoes what type of hybridization?

• sp hybridization

• sp² hybridization

• sp³ hybridization

• dsp³ hybridization

The nitrogen atom undergoes what type of hybridization?

• sp hybridization

• sp² hybridization

• sp³ hybridization

• dsp³ hybridization

Tags

NGSS.HS-PS1-1

What is true about Lewis Structures? (Check all that apply.)

• Lewis Structures show all of the electrons for each atom in the molecule.

• Lewis Structures can be drawn using valence electrons of the atoms in a molecule.

• Lewis Structures can be used to determine the molecular geometry of a molecule.

• Lewis Structures show ions that have gained and lost electrons.

Which electron pair takes up more space and determines the shape of a molecule?

• bond

• lone pair

• They take up the same space.

What will the shape of a molecule be if the center atom has 3 bonding domains and 1 nonbonding domain?

• bent

• trigonal planar

• trigonal pyramidal

• tetrahedral

What is the shape of CH₄?

• bent

• trigonal planar

• trigonal pyramidal

• tetrahedral

What is the shape of H₂O?

• linear

• bent

• trigonal planar

• trigonal pyramidal

How are covalent compounds formed?

• when electrons are gained or lost

• when electrons are transferred

• when electrons are shared

• none of the above

Tags

NGSS.HS-PS1-1

What molecular shape is the structure shown here? (BCl₃)

• linear

• trigonal planar

• tetrahedral

• trigonal pyramidal