Three hypothetical main-group elements are described below
CHEMISTRY · Multi-part · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
Three hypothetical main-group elements are described below.
• Element X: Group 1, Period 3, qualitative electronegativity ≈ 0.9
• Element Y: Group 16, Period 2, qualitative electronegativity ≈ 3.5
• Element Z: Group 14, Period 4, qualitative electronegativity ≈ 1.6
A chemist combines these elements to produce the binary compounds X2Y, XZ, and ZY2.
(a) Calculate the electronegativity difference (ΔEN) for each of the three compounds.
(b) Using your ΔEN values together with the periodic classifications of the elements involved, determine the predominant bonding type expected in each compound.
(c) Rank the three compounds in order of increasing lattice (or network) energy, providing a brief justification that references your bonding classifications from part (b).