Types of Chemical Bonds Practice Test

In aluminum metal, Al atoms are bonded through delocalized valence electrons that move throughout the solid. What type of bonding best describes solid aluminum?

In $\mathrm{CH_4(g)}$, the electronegativity of C is 2.5 and that of H is 2.1, so $\Delta EN = 0.4$. Which classification best describes a C–H bond in methane?