Apositive ion may be formed when a
a. non-metal atoms gains enough electrons to complete its outer shell
b. metal atoms gains enough electrons to complete its outer shell
c. metal atom loses it's outer shell

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

If c + di is a point on the circle, then | c + di |=

What are the coefficients to balance the following equation? ba+br2=babr2