I have a test tomorrow morning please helps! Why is energy quantized? Relate it to the photoelectric effect

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

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?