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Chapter 10 Homework

front 1

Order the following from least electronegative (1) to most electronegative (3):

Ga, Br, Ti

back 1

front 2

Order the following from most electronegative (1) to least electronegative (3):

Ga, Br, Ti

back 2

front 3

Given the following electronegativities, what type of bonding would be expected between Ca and Cl:

Ca is 1.2 O is 3.5 Cl is 3.0

  • ionic
  • polar covalent
  • non-polar covalent

back 3

ionic

front 4

Given the following electronegativities, what type of bonding would be expected between C and F:

K is 1.0 C is 2.55 F is 4.0

  • ionic
  • polar covalent
  • non-polar covalent

back 4

polar covalent

front 5

Given the following electronegativities, what type of bonding would be expected between K and F:

K is 1.0 C is 2.55 F is 4.0

  • ionic
  • polar covalent
  • non-polar covalent

back 5

ionic

front 6

Rank the following compounds in order from lowest (weakest) lattice energy to greatest (strongest) lattice energy.

1 being the weakest and 4 being the strongest

back 6

front 7

Draw the Lewis Structure of CH4. How many double bonds are present?

back 7

0

front 8

Draw the Lewis Structure of CH4. How many lone pairs (non-bonding pairs) are present?

back 8

0

front 9

Draw the Lewis Structure of NH3. How many double bonds are present?

back 9

0

front 10

Draw the Lewis Structure of NH3. How many lone pairs (non-bonding pairs) are present?

back 10

1

front 11

Draw the Lewis Structure of CO2 (OR C O2). How many double bonds are present?

back 11

2

front 12

Draw the Lewis Structure of CO2 (OR C O2). How many lone pairs (non-bonding pairs) are present?

back 12

4

front 13

Draw the Lewis Structure of NO2 -1 (OR N O2 minus). How many resonance structures can you draw?

back 13

2

front 14

Draw the Lewis Structure of NO3 -1 (OR N O3 minus). How many resonance structures can you draw?

back 14

3

front 15

Draw the Lewis Structure of NO3 -1 (OR N O3 minus). What is the formal charge of N?

back 15

+1

front 16

Draw the Lewis Structure of ClO3 - (OR Cl O 3 1 minus) with the lowest possible formal charge on Cl by expanding its octet. How many double bonds are present?

back 16

2

front 17

Draw the Lewis Structure of ClO3 - (OR Cl O 3 1 minus) with the lowest possible formal charge on Cl by expanding its octet. . How many lone pairs (non-bonding pairs) are present?

back 17

8

front 18

Draw the Lewis Structure of PF5 (OR P F5). How many electron pairs (not total electrons) surround the P atom.

back 18

5

front 19

Draw the Lewis Structure of I3 - OR (I3 minus). How many total nonbonding electrons surround the central I atom?

back 19

6

front 20

Using the bond energies below (kJ/mol), calculate the estimated ΔH of the reaction pictured below the table. Express your answer in kJ/mol.

Screen reader note: "=" is read as a double bond. "identical to" is read as a triple bond. All other bonds are single bonds. End of note.

back 20

-134

WRONG

Answer: -87