Please help me I need these answers

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al