Nombres griegos de
Los elementos
a) Hierro
b) Oro
c) Cobre
d) Mendelevio

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

What are the constituent metals of stainless steel?