chemistry final 2

in what section of the periodic table is the 4f subshell being filled?

• period 4

• transition elements Y to Cd

• group 1A

• lanthanides

which of the following favors formation of an ionic compound?

• low ionization energy for metal

• high electron affinity for non metal

• high lattice energy

• all of above

which of the atoms below is least likely to violate the octect rule?

• Be

• P

• S

• F

how many electrons are shown in the lewis structure of perchlorate ion, ClO4-

• 30

• 31

• 32

• 50

what is the bond order of the C-O bond in acetone

• 4

• 1.5

• 0.5

• 1

• 2

as the bond order of a carbon-carbon bond increases which of the following decreases?

• number of electrons between the carbon atoms

• vibrational frequency of bond vibrations

• bond energy (bond strength)

• bond length

in which of the following is the actual compound a resonance hybrid of lewis structure

• NO2

• CCl4

• H2O

• O3

which of the following bonds is most polar

• N-Cl

• Br-Br

• C-N

• S-O

which of the following molecular shapes has 6 atoms joined to a central atoms

• linear

• trigonal bipyramidal

• tetrahedral

• planar triangular

• octahedral

which molecular shape has bond angles which are not all the same

• linear

• planar triangular

• tetrahedral

• trigonal bipyramidal