Lewis dot, VSEPR, polarity

CO₂ has polar bonds but is a NON POLAR molecule. Why?

• it has an asymmetrical shape

• bond polarity or dipole moment between C and O atoms cancel

• there is net dipole moment between C and O atoms in molecule

• bond polarity does not exist between C⁺ and O^- atoms

Is this molecule polar or nonpolar?

• polar

• nonpolar

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

• Pairs of valence electrons
• Inner shell electrons
• Mobile Electrons
• Electrons closest to the nucleus

In a polar bond, the more electronegative element will assume a partial ________ charge.

• positive
• negative

What is the correct Lewis Dot Structure for ammonia NH3

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Will this molecule be polar or nonpolar? CS₂

• polar
• nonpolar

How many lone pairs of electrons are on the P atom in PF3?

• 1
• 2
• 3
• 0

Tags

NGSS.HS-PS1-1

Which of the following molecular shapes would have a bond angle of 180 Degrees?

• Bent
• Trigonal Planar
• Tetrahedral
• Linear

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1