What is cation radical?

Why do secondary directions starts with north and south? Which is the longest mile or yard? What does the term half life mean and give the half life of a few substances? What is the three main functions of a mco? A thin layer of oil with index of refraction 1.28 is floating on water what is the minimum thickness of the oil in the region that reflects green light of wavelength 536 nm? What was the worst weapon in World War I? Why is 0.03percent carbon dioxide inhaled while 4.1 percent is exhaled? How long is 80 megameters in meters? What are the weaknesses in the theory of the big bang? What happens to water when it is put under fan? Does the fact that two elements combine in a one-to-one atomic ratio mean that the charges on their ions are both 1? Why all organism have same ratio of base pair in DNA? Are earthquakes frequent in Central America? How are palm trees useful in the desert? How do beryllium carbon and oxygen produce star? What formula do you use to determine the amount of energy used by an appliance? Which theory examines how geographical location and features in that location affect crime? What system filters the waste produced by cells? What substances added to the mixture in D were inhibitors? What is the proper neutrophils for a male?