Question: In the following equation, which element has been reduced?

Answer: Fe

Question: In the following equation, which element has been oxidized?

Answer: AI

Question: Which of the following is the best definition of oxidation?

Answer: loss of electrons by an atom

Question: Which of the following is the best definition of reduction?

Answer: gain of electrons by an atom

Question: What is the oxidation number of chromium in K 2Cr 2O 7?

Answer: +6