In the periodic table, which is described by the statement: each element has one more outer electron than the element before it?
a. a period
b. a family
c. a group
d. a vertical row

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

gold is my favorite solid.