Question

If the dipole moment is________ or smaller the molecule will be considered non-polar.

0.1 debye

0.2 debye

0.3 debye

0.4 debye

If the inter-nuclear distance in Br2 is 218pm, what is the covalent radius of a bromine atom?

a) 160 pm

b) 218 pm

c) 109 pm

d) 65 pm

Which one of the following compounds is non-polar?

a) SF2

b) SF4

c) BF3

d) NF3

What is the ideal bond angle in PH3

180 degrees

120 degrees

109.5 degrees

90 degrees

Can a molecule with a central atom in trigonal bipyramidal electron group geometry have the formula AX2Y3 and be non-polar?

yes

no

you need to know the electronegativity of the central atom.

you need to know the electronegativities of X and Y.

What is the ideal bond F-Xe-F bond angle in xenon difluoride?

180 degrees

120 degrees

109.5 degrees

90 degrees

Which bonding pair will have the longest bond length?

C-N

C-O

C-F

C-Si

If the C-C bond length is 154 pm and the Se-Se bond length is 238 pm, which of the following values should be closest to the C-Se bond length

205 pm

119 pm

77 pm

196 pm

Which of the following statements best describes the expected bond lengths in AsF5?

all bond lengths will be the same.

none of the bond lengths will be the same.

the atoms bonded in the axial positions will have longer bond lengths than the atoms bonded in the equatorial positions.

the atoms bonded in the axial positions will have shorter bond lengths than the atoms bonded in the equatorial positions.

What is the unit most commonly used for dipole moment mesurements?

a) einstein

b) erg

c) joule

d) debye