Enter the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation azx.
express your answer as a chemical symbol using isotope notation.
40
20ca

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Idon’t know how to solve this question