Select all the compounds below that contain ionic bonds. (Cross out/delete compounds that are not ionic.) 1. NaCl(s)
2. O2(g)
3. Fe (5)
4. HCl(aq)
5. CuCl2 (s)

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients

Light waves travel than sound waves.