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

Ag, Rb, I

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

C, Ge, Pb

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

Ca is 1.2 O is 3.5 Cl is 3.0

ionic

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

K is 1.0 H is 2.5 Br is 3.1

ionic

Given the following electronegativities, what type of bonding would be expected between Na and Br:

Na is 1.1 H is 2.5 Br is 3.1

ionic

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

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

0

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

0

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

0

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

1

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

2

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

4

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

2

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

3

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

+1

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?

2

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?

8

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

5

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

6

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.

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