Name: Answer Key Period: Date: Honors A Optional assignment for those who want more review

Honors WS 3.18: UNIT 3 Test Review Directions: (1) Write if the element is a metal or non-metal. (2) Write down the number of valence electrons. (3) Based on the octet

rule, determine if the element wants to gain or lose electrons. (4) Write down what ion the element will form if it makes an ionic

compound. (5) Write down how many covalent bonds the element forms in a molecule or "N/A" if it does not make covalent bonds.

(6) Write down what noble gas the element will resemble after obeying the octet rule

N 1) Non-Metal

Ba 1) Metal

Al 1) Metal

Br 1) Non-Metal

2) 5 valence e- 2) 2 valence e- 2) 3 valence e-

2) 7 valence e-

3) Gain 3

3) Lose 2

3) Lose 3

3) Gain 1

4) N3-

4) Ba2+

4) AP-

4) Br

5) 3 covalent bonds

5) N/A

5) N/A 5) 1 covalent bond

6) Neon

6) Xenon

6) Neon

6) Krypton

Directions: Complete the Table. If the Parent Cation or Anion does not have a charge, assign the charge based on the octet rule or

what you know about transition metals.

Name Parent Cation Parent Anion Chemical Formula

1) Rubidium Sulfate Rb+ S042- Rb2SO4

2) Zinc Phosphide Zn2+ P3- Zn3P2

3) Silver Phosphate Ag+ P043- Ag3PO4

4) Tin(IV) Phosphate Sn4+ P043- Sn3(PO4)4

5) Strontium Sulfate Sr2+ S042- SrSO4 6) Aluminum Sulfide A13+ S2- A1253

7) Copper(I) Carbonate Cu + C032- Cu2CO3

8) Copper(II) Carbonate Cu2+ C032- CuCO3 9) Scandium Phosphate Sc + P043- Sc3PO4

10) Tungsten(VI) Phosphite W6+ P033- W(P03)2

11) Lithium Chlorite Li + C103- LiC103

12) Calcium Oxide Ca2+ 0 2- CaO

13) Potassium Bromide K+ Br KBr

14) Gold(I) Phosphite Au + P033- Au3P03

15) Cadmium Carbonate Cd2+ C032- CdCO3 16) Manganese(II) Nitrate mn2+ NO3- Mn(NO3)2

17) Technetium(VII) Chlorate Tc7+ C103- Tc(C103)7

18) Strontium Chloride Sr2+ Cl- SrCh 19) Potassium Sulfide K+ S2- K25 20) Barium Nitrate Ba2+ NO3- Ba(NO3)2

LDF LDF, Dipole-Dipole

Non-Polar Molecule Polar Molecule Polar Molecule Polar Molecule

Square Planar Tetrahedral Triganol Bipyramid Triganol Pyramid 90° 109° 109° 120°, 90°

90° 90°

LDF, Dipole-Dipole 25) XeF4

ls-

• Fr.•

ac+No. :F:

LDF 26) CH3F

LDF, Dipole-Dipole 27) PC15

.1," ;*

: L/ vt. .

4- 1 I • //bp

:G• I " :C 11

LDF, Hydrogen Bonding 28) NC13

• • • •

• •

Non-Polar Molecule Non-Polar Molecule Non-Polar Molecule Polar Molecule LDF LDF

29) CBr4

C" S-

:BA\ 3c:

Square Pyramid Square Pyramid

Non-Polar Molecule Non-Polar Molecule Polar Molecule Polar Molecule LDF, FfilpWriforoil LDF, Dipole-Dipole LDF, Dipole-Dipole LDF

21) 10F3 24) FIF 22) CO2

4t-

19 = C=

23) PH2F

Triganol Pyramid 109°

Linear 180°

Sawhorse 1200, 90°

Linear N/A

32) Xe0F4 : d•

30) 002

Bent 109°

Tetrahedral 109° 109°

Directions: For each of the following molecules below (1) Draw the Lewis Structure. Make sure to include lone pairs as well as dashes and wedges if

they apply. (2) Write down the molecule geometry below the Lewis Structure. (3) Write down the bond angles (4) Assign partial charges to all polar

bonds. (5) Determine if the molecule is polar or non-polar and write it down. (6) List the type(s) of intermolecular forces that molecule has.

Directions: For each of the following molecules below (1)) Draw the Lewis Structure. Make sure to include lone pairs as well as

dashes and wedges if they apply. (2) Write down the molecule geometry below the Lewis Structure. (3) Write down the bond angles

33)

,...

C102-

-- - 5:

: C1

ii

: 0 . ._._,

1 -

34)

1---

S032-

2- ' •

l'o\ \\ ).. 0:

.0: • . • -

35) C1F4+ ...-- -•

////

1 ( • 1.-.• , - - . 1

_

Ck .•

— F.

,

. •

+t

36) P043-

3- : O.'

11

.8 \\‘:17) . •. •

I -.......... . 6 . :0:

_

Bent Triganol pyramid Sawhorse Tetrahedral 109° 109° 90, 120° 109°

Directions: For each of the following molecules below (1)) Draw the Lewis Structure, skip dashes and wedges if you want. (2)

determine the molecular geometry. (3) Give the orbital hybridization for the central atom. (4) Draw the hybridized orbital diagram for

the central atom.

37) HCN

H CaNI:

Linear

sp

[He]4

1

4 4

2sp 2sp 2p 2p a a TI IT

38) PC15 . C.

:Et .. I - • aii - • V

/ \ • . :c.1 CI:

Triganol bipyramid

sp3d

[Ne]

4 1 4 4 t

3sp3d 3sp3d 3sp3d 3sp3d 3sp3d a a a a a

39) CO2

:9 -= CEO:

Linear

sp

[He]4

4

4 4

2sp 2sp 2p 2p 0 0 IT IT

2sp2 a

25p2 a

40) NH3

I 14

Triganol Pyramid

Sp3

[He]

U 1 4 4

2sp3 2sp3 2sp3 2sp3 a a a

41) XeF4

'F ..F... .. ., / . Xe,

:r .T.• ...

Square Planar

sp3d2

[Kr]

NUNNU

NUt

t

t

t

4d 4d 4d 4d 4d 5sp3d2 5sp3d2 5sp3d2 5sp3d2 5sp3d2 5sp2d3 00 0 0

Directions: draw the hybridized orbital diagram for the atom with the arrow pointed at it and give the chemical formula for the

substance.

42)

Ci7H18F3NO

[He]

43)

C19H21N30

[He] 2sp3 2sp3 2sp3 2sp3

a a a a

2sp2 a

2p

2sp2 2sp2

N2H2

2sp2 2p

[He]