Project #79931 - Chemistry unit 7

Question 1

1.      In molecular orbital theory, the σ1s orbital is __________ and the σ1s* orbital is __________ in the H2 molecule.

 

filled; filled

 

filled; empty

 

filled; half-filled

 

half-filled; filled

 

empty; filled

 

 

Question 2

1.       The molecular geometry of the left-most (methyl group) carbon atom in the molecule below is __________.

Image

 

 

 

trigonal planar

 

trigonal bipyramidal

 

tetrahedral

 

octahedral

 

T-shaped

 

Question 3

1.      According to valence bond theory, which orbitals overlap in the formation of the bond in HCl?

 

1s on H and 3p on Cl

 

1s on H and 4s on Cl

 

1s on H and 2p on Cl

 

2s on H and 3p on Cl

 

2s on H and 2p on Cl

 

Question 4

1.      Based on molecular orbital theory, there are __________ unpaired electrons in the B2.

 

0

 

3

 

1

 

2

 

1/2

 

Question 5

1.      The central nitrogen atom in the NO2- ion has __________ nonbonded electron pairs and __________ bonded electron pairs in its valence shell.

 

2; 2

 

3; 4

 

1; 3

 

3; 2

 

1; 2

 

Question 6

1.       The molecular geometry of the right-most (C=O) carbon atom in the molecule below is __________.

UnitVII_MC6

 

trigonal planar

 

trigonal bipyramidal

 

tetrahedral

 

octahedral

 

T-shaped

 

Question 7

1.      A typical double bond consists of __________.

 

three sigma bonds

 

three pi bonds

 

one sigma and two pi bonds

 

one sigma and one pi bond

 

three ionic bonds

 

 

Question 8

1.      Based on molecular orbital theory, the only molecule in the list below that has unpaired electrons is __________.

 

C2

 

N2

 

F2

 

O2

 

Ne2

 

Question 9

1.      The hybridization of two atomic orbitals results in the formation of __________ molecular orbitals.

 

1

 

2

 

3

 

4

 

0

 

Question 10

1.      Of the molecules below, only __________ is polar.

 

CCl4

 

CH4

 

CH3Cl

 

SiCl4

 

I2

 

Question 11

1.       Of the following, only __________ has sp2 hybridization of the central atom.

 

PH3

 

BF3

 

ICl3

 

l3-

 

PF5

 

Question 12

1.      A typical triple bond __________.

 

consists of one α bond and two π bonds

 

consists of three shared electrons

 

consists of two α bonds and one π bond

 

consists of six shared electron pairs

 

is longer than a single bond

 

Question 13

1.      The carbon-carbon α bond in ethylene, H2C=CH2, results from the overlap of __________.

 

sp hybrid orbitals

 

sp3 hybrid orbitals

 

sp2 hybrid orbitals

 

s atomic orbitals

 

p atomic orbitals

 

Question 14

1.      The molecular geometry of the NF3 is __________.

 

trigonal pyramidal

 

trigonal planar

 

bent

 

tetrahedral

 

T-shaped

 

Question 15

1.      Of the molecules below, only __________ is polar.

 

BF3

 

NH3

 

I2

 

CO2

 

CCI4

 

Question 16

1.      The central C atom in the CH4 molecule has __________ unbonded electron pairs and __________ bonded electron pairs in its valence shell.

 

1; 4

 

0; 4

 

4; 0

 

4; 1

 

4; 2

 

Question 17

1.      The electron-domain geometry of __________ is tetrahedral.

 

SO2

 

SO3

 

SnCl3-

 

XeF4

 

All of the above

 

Question 18

1.      There are __________ α (sigma) bonds and __________ π (pi) bonds in H3C−CH2−CH=CH−CH2−C=CH.

 

14; 2

 

10; 3

 

12; 2

 

13; 2

 

16; 3

 

Question 19

1.      When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

 

One

 

Six

 

Three

 

Four

 

Five

 

Question 20

1.      ClF3 has "T-shaped" geometry. There are __________ non-bonding domains in this molecule.

 

0

 

1

 

2

 

3

 

4

 

 

1. Place the following five gases in order of increasing average molecular speed at 300 K: CO, SF6, H2S, Cl2, HBr. Explain your answer.

 

 2. Calculate and compare the rms speeds of CO and Cl2 molecules at 300 K.

 

 3. Calculate and compare the most probable speeds of CO and Cl2 molecules 

Subject Science
Due By (Pacific Time) 08/24/2015 12:00 am
Report DMCA
TutorRating
pallavi

Chat Now!

out of 1971 reviews
More..
amosmm

Chat Now!

out of 766 reviews
More..
PhyzKyd

Chat Now!

out of 1164 reviews
More..
rajdeep77

Chat Now!

out of 721 reviews
More..
sctys

Chat Now!

out of 1600 reviews
More..
sharadgreen

Chat Now!

out of 770 reviews
More..
topnotcher

Chat Now!

out of 766 reviews
More..
XXXIAO

Chat Now!

out of 680 reviews
More..
All Rights Reserved. Copyright by AceMyHW.com - Copyright Policy