A scientist in a lab creates a mystery element with an atomic mass of approximately 19. It is more electronegative than lithium or sodium, and its atomic radius is smaller than beryllium. The scientist thinks it must be the alkali metal potassium. Do you agree? Use claim, evidence, and reasoning to support your answer.

Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton             rosalind franklin marie curie             gertrude b. elion ada yonath             henry cavendish robert boyle             antoine lavoisier mario j. molina             svante arrhenius