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?