11. Bonding & Molecular Structure

Which of the following statements correctly describes the Lewis structure and resonance of HCN (hydrogen cyanide)?

In the Lewis dot structure of PF_3, how many lone pairs of electrons are present on the phosphorus (P) atom?

Which of the following molecules can have an expanded octet in their Lewis dot structure?

Which of the following compounds is an exception to the octet rule?

Which of the following compounds could have a Lewis structure with an incomplete octet?

Which of the following is a common error found in invalid Lewis dot structures that are exceptions to the octet rule?

Why don't we draw double bonds between the Be atom and the Cl atoms in BeCl_2 when constructing its Lewis dot structure?

After drawing the Lewis structure of BeF_2, what is the ideal bond angle around the central beryllium atom?

Which of the following elements should never have expanded octets in their Lewis dot structures?

Which of the following molecules has only one lone (non-bonding) pair in its Lewis dot structure?

When drawing the Lewis structure for SF_4, what is the hybridization of the central sulfur atom and its formal charge?

Which molecule has a central atom with two single bonds and two lone pairs of electrons, representing an exception to the octet rule in its Lewis dot structure?

Which of the following is a reason why a Lewis dot structure might be considered invalid, especially in the context of exceptions to the octet rule?

In the Lewis dot structure of BCl_3, how many lone pairs are present on the central boron atom?

Which of the following is the best Lewis dot structure for SF4?