The hybridizations of nitrogen in NF3 and NH3 are ________ and ________, respectively.

For a given arrangement of ions, the lattice energy increases as ionic radius ________ and as ionic charge ________.

What is the hybridization of the carbon atom attached to the two oxygen atoms in the structure below? 

In the Lewis structure shown here, A, D, E, Q, X, and Z represent elements in the first two rows of the periodic table. Identify all six elements so that the formal charges of all atoms are zero. 

What is the electron configuration for the Co2+ ion?

Which of the following Lewis structures would be an expansion to the octet rule?

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For a given arrangement of ions, the lattice energy increases as ionic radius ________ and as ionic charge ________.

What is the hybridization of the carbon atom attached to the two oxygen atoms in the structure below? 

What is the electron configuration for the Co2+ ion?