Which element is reduced in the following reaction: 2mg+o₂ → 2mgo if mg goes from 0 to +2 and o goes from 0 to -2?

mg and o

o

mg

neither element

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.