That is, if you stream 1,000 tracks in a day, so your charges are 85p, but you have revenues of 86p, then you have to pay the MCPS 8.6p, not 85p. This seems bonkers to me, and I did ask the MCPS/PRS if I had it right. They seemed to think I had. Musically points to the headline royalty rate.
Use your Periodic Table to determine whether an element is a metal or a non-metal and how many valence electrons it has to help determine if it will bond by transferring (ionic/electrovalent) or sharing (covalent) valence electrons.
Huckel's Rule determines whether a compound is aromatic or not. To check a compound against Huckel's Rule, you must first count its pi electrons. To satisfy Huckel's Rule, the number of pi electrons must be equal to 4n + 2, and n must be a number equal to 0 or any other positive integer.