Entry Task: Oct 22nd Monday

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Agenda

• Review Ch. 6-9

Clicker Questions

Chapter 6

What is the frequency of a wave which has a wavelength of 0.156 nm

5.2 x 10-10

1.92 x 109

0.468 x 108

1.92 x 10-9

25% 25%25%25%

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1. 5.2 x 10-10

2. 1.92 x 109

3. 0.468 x 108

4. 1.92 x 10-9

Which color of visible light has the least amount of energy per photon?

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Violet Blue

Yellow

Red

25% 25%25%25%

1. Violet2. Blue3. Yellow4. Red

As the principal energy level increases in an atom's orbitals, the average distance of an electron energy level from the nucleus ______________.

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Incre

ases

Decre

ases

stay

s the sa

me va

ries

25% 25%25%25%1. Increases2. Decreases3. stays the same4. varies

The probability map for an electron is called

An orbit

Electr

on confi...

orbita

l

Electr

on map

25% 25%25%25%

1. An orbit2. Electron configuration3. orbital4. Electron map

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A given set of f orbitals consists of ______________ orbital(s).

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3 5 7 9

25% 25%25%25%1. 32. 53. 74. 9

The maximum number of electrons allowed in each of the d orbitals is

2 4 8 18

25% 25%25%25%

1. 22. 43. 84. 18

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The maximum number of electrons allowed in the p sublevel of the third principal level is

2 6 8 18

25% 25%25%25%1. 22. 63. 84. 18

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Phosphorus has how many electrons in its outermost principal energy level?

2 3 5 15

25% 25%25%25%1. 22. 33. 54. 15

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The electron configuration for the sulfur atom is

1s22s2

2p63s23p...

1s22s2

2p63s23p...

1s22s2

2p63s5

1s22s2

2p63s23p...

25% 25%25%25%1. 1s22s22p63s23p2

2. 1s22s22p63s23p4

3. 1s22s22p63s5

4. 1s22s22p63s23p50of30

How many electrons are in the third principal energy level (n = 3) of one atom of Fe?

2 8 14 18

25% 25%25%25%1. 22. 83. 144. 18

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Clicker Questions

Chapter 7

The first Periodic Table was created by

Amadeo Avo

gadr..

.

Dmitr

i Mendele...

Henry

Mose

ley.

Ernest

Rutherf.

..

25% 25%25%25%1. Amadeo Avogadro.

2. Dmitri Mendeleev.

3. Henry Moseley.

4. Ernest Rutherford.

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The effective nuclear charge felt by an atom’s valence electrons (X) going from left to right and (Y) going down a column on the Periodic Table.

25%

25%25%

25%

X = increases Y... X = increases Y... X = decreases Y... X = decreases Y...

1. X = increases Y = increases

2. X = increases Y = decreases

3. X = decreases Y = increases

4. X = decreases Y = decreases0of30

The correct order of increasing atomic radius (smallest largest) is

Na < M

g < K < ...

Mg <

Na < K < ...

Rb < K < Na < ...

Rb < K < Mg <

...

25% 25%25%25%

1. Na < Mg < K < Rb.

2. Mg < Na < K < Rb.

3. Rb < K < Na < Mg.

4. Rb < K < Mg < Na.

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The statements below refer to ionic radii. Which statement is FALSE?

Br1– is la

rger...

Se2– is

larger..

.

K1+ is l

arger .

..

Na1+ is

larger..

.

25% 25%25%25%1. Br1– is larger than Cl1–.

2. Se2– is larger than Br1–.

3. K1+ is larger than Ca2+.

4. Na1+ is larger than K1+.

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Two ions are isoelectronic if they have the same

charge.

number of p

rot..

.

number of e

lec...

number of n

eut...

25% 25%25%25%

1. charge.

2. number of protons.

3. number of electrons.

4. number of neutrons.

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The minimum energy needed to remove an electron from an atom in its ground state is called the atom’s

potential ener..

.

activa

tion ene...

electron affi

n...

ioniza

tion ene...

25% 25%25%25%1. potential energy.

2. activation energy.

3. electron affinity.

4. ionization energy.

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The energy change that occurs when an electron is added to an atom is called the atom’s

potential ener..

.

activa

tion ene...

electron affi

n...

ioniza

tion ene...

25% 25%25%25%

1. potential energy.

2. activation energy.

3. electron affinity.

4. ionization energy.

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The correct order of increasing first ionization energy (smallest largest) is

Na < Ca < Al <

...

Na < Al <

Ca <...

Na < Al <

Sn <...

Ca < Na < Sn

<...

25% 25%25%25%

1. Na < Ca < Al < Sn.

2. Na < Al < Ca < Sn.

3. Na < Al < Sn < Ca.

4. Ca < Na < Sn < Al.

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The correct order of increasing electron affinity (most negative least negative) is

O < Cl <

B < C...

O < Cl <

C < B...

Cl < O

< C < B...

Cl < O

< B < C...

25% 25%25%25%1. O < Cl < B < C.

2. O < Cl < C < B.

3. Cl < O < C < B.

4. Cl < O < B < C.

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Most metal oxides form _______ solutions when dissolved in water.

acidic

basic

neutral

amphoteric

25% 25%25%25%

1. acidic

2. basic

3. neutral

4. amphoteric

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Most nonmetal oxides form _______ solutions when dissolved in water.

acidic

basic

neutral

amphoteric

25% 25%25%25%

1. acidic

2. basic

3. neutral

4. amphoteric

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A soft gray solid reacts with water to form a flammable gas and a basic solution. The solid is most likely to be a

noble gas.

halogen.

group IIA

meta

...

transiti

on met..

.

25% 25%25%25%

1. noble gas.

2. halogen.

3. group IIA metal.

4. transition metal.0of30

Ozone is an allotrope of which element?

hydroge

n

oxygen

sulfu

r

chlorin

e

25% 25%25%25%

1. hydrogen

2. oxygen

3. sulfur

4. chlorine

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Unknown solid X turns a Bunsen burner flame green and produces a purple color on reaction with NaOCl. X is

BaI2.

BaBr2

. Sr

I2.

d.SrBr2.

25% 25%25%25%

1. BaI2.

2. BaBr2.

3. SrI2.

4. d. SrBr2.0of30

The noble gases

are monato

mic.

have filled s .

..

are genera

lly ...

d.All o

f the a...

25% 25%25%25%

1. are monatomic.

2. have filled s and p subshells.

3. are generally unreactive.

4. d. All of the above.

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Clicker Questions

Chapter 8

The two types of chemical bonds commonly found in compounds are

doric and co

va...

ionic

and elec...

ionic

and cova..

.

electrolytic a

...

25% 25%25%25%

1. doric and covalent.

2. ionic and electrolytic.

3. ionic and covalent.

4. electrolytic and compound.

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The Lewis symbol for a sulfur atom includes how many dots?

5 6 7 8

25% 25%25%25%1. 5

2. 6

3. 7

4. 80of30

The octet rule states that atoms tend to gain, lose, or share electrons until they have _______ valence electrons.

5 6 7 8

25% 25%25%25%1. 5

2. 6

3. 7

4. 80of30

Which compound below has the largest lattice energy?

NaCl

KBr CaO CsI

25% 25%25%25%1. NaCl

2. KBr

3. CaO

4. CsI

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When a transition metal atom forms a +1 ion, it loses an electron from what type of orbital?

s p d f

25% 25%25%25%

1. s

2. p

3. d

4. f0of30

Which choice below correctly lists the elements in order of increasing electronegativity (least most) ?

C < N < O

< F

N < C < O

< F

N < C < F

< O

C < N < F

< O

25% 25%25%25%1. C < N < O < F

2. N < C < O < F

3. N < C < F < O

4. C < N < F < O0of30

Which choice below correctly lists the elements in order of increasing electronegativity (least most) ?

F < Cl <

Br < ...

F < Cl <

I < B...

I < Cl <

Br < ...

I < Br <

Cl < ...

25% 25%25%25%1. F < Cl < Br < I

2. F < Cl < I < Br

3. I < Cl < Br < F

4. I < Br < Cl < F0of30

The carbon disulfide (CS2) molecule has

25%

25%25%

25%

two single bonds. two double bonds. a single bond and... a single bond and...

1. two single bonds.

2. two double bonds.

3. a single bond and a double bond.

4. a single bond and a triple bond.

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The hydrogen cyanide (HCN) molecule has

25%

25%25%

25%

two single bonds. two double bonds. a single bond and... a single bond and...

1. two single bonds.

2. two double bonds.

3. a single bond and a double bond.

4. a single bond and a triple bond.

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The formal charge on the nitrogen atom in the nitrate ion (NO3

1–) is

2 1 0 –1

25% 25%25%25%

1. +2

2. +1

3. 0

4. –1

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The formate ion (HCO21–) is

stabilized by resonance, which suggests that the oxygen atoms’ formal charges are:

–1 and –1

0 and 0

–1 and 0

–1/2 and –1/2

25% 25%25%25%

1. –1 and –1

2. 0 and 0

3. –1 and 0

4. –1/2 and –1/20of30

Which molecule below violates the octet rule?

PF5 CH4 N

Br3 O

F2

25% 25%25%25%1. PF5

2. CH4

3. NBr3

4. OF2

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Which molecule below has an unpaired electron?

NO

NH3

BF3 PF5

25% 25%25%25%1. NO

2. NH3

3. BF3

4. PF5

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For atoms X and Y, the bond enthalpy of an X-Y bond is _______ the bond enthalpy of an X=Y bond.

25%

25%25%

25%

greater than less than equal to variable, dependi...

1. greater than

2. less than

3. equal to

4. variable, depending on X and Y

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For atoms X and Y, the bond length of an X-Y bond is _______ the bond length of an X=Y bond.

25%

25%25%

25%

greater than less than equal to variable, dependi...

1. greater than

2. less than

3. equal to

4. variable, depending on X and Y

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Clicker Questions

Chapter 9

The overall shape of a molecule is determined by its

atoms.

bond angles.

Symmetry

.

electron affi

n...

25% 25%25%25%

1. atoms.

2. bond angles.

3. Symmetry.

4. electron affinity.

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If a central atom is surrounded by six electron domains, the term used to describe its fundamental geometry is

square

planar.

octahedral.

square

pyramid...

tetra

hedral.

25% 25%25%25%

1. square planar.

2. octahedral.

3. square pyramidal.

4. tetrahedral.0of30

The geometry of the methane (CH4) molecule is

linear.

trigo

nal bipyr..

.

trigo

nal plan

a...

tetra

hedral.

25% 25%25%25%

1. linear.

2. trigonal bipyramidal.

3. trigonal planar.

4. tetrahedral.

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The geometry of the phosphorus trichloride (PCl3) molecule is

tetra

hedral.

trigo

nal plan

a...

pyramidal.

trigo

nal bipyr..

.

25% 25%25%25%

1. tetrahedral.

2. trigonal planar.

3. pyramidal.

4. trigonal bipyramidal.

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The geometry of the bromine trifluoride (BrF3) molecule is

see-sa

w shaped...

trigo

nal plan

a...

pyramidal.

T-shaped.

25% 25%25%25%

1. see-saw shaped.

2. trigonal planar.

3. pyramidal.

4. T-shaped.

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The geometry of the xenon tetrafluoride (XeF4) molecule is

square

planar.

tetra

hedral.

see-sa

w shaped...

trigo

nal bipyr..

.

25% 25%25%25%1. square planar.

2. tetrahedral.

3. see-saw shaped.

4. trigonal bipyramidal.

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Formic acid (HCO2H) has an O-C-O bond angle of (X) degrees and a C-O-H bond angle of (Y) degrees.

X = 180, Y = 1...

X = 120, Y = 1...

X = 180, Y = 1...

X = 109.5, Y =...

25% 25%25%25%1. X = 180, Y = 120

2. X = 120, Y = 109.5

3. X = 180, Y = 109.5

4. X = 109.5, Y = 109.5

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Which molecule is polar?

CH4 BBr3 SF

6 N

H3

25% 25%25%25%

1. CH4

2. BBr3

3. SF6

4. NH3

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Which molecule is nonpolar?

CO2 SO

2 IF3

IF5

25% 25%25%25%1. CO2

2. SO2

3. IF3

4. IF5

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The hybridization of the oxygen atom in a water molecule is

sp.

sp2.

sp3.

sp3d.

25% 25%25%25%

1. sp.

2. sp2.

3. sp3.

4. sp3d.

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The central atom of which molecule below is sp3 d-hybridized?

CH4 SO

3 Se

Br4

XeOF4

25% 25%25%25%1. CH4

2. SO3

3. SeBr4

4. XeOF40of30

A molecule of acetonitrile (CH3CN) contains _______ sigma bonds.

2 3 4 5

25% 25%25%25%1. 2

2. 3

3. 4

4. 50of30

A molecule of crotonaldehyde (CH3CH=CH-CH=O) contains _______ pi bonds.

1 2 3 4

25% 25%25%25%1. 1

2. 2

3. 3

4. 40of30

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