Who proved the existence of the electron of the atom with an experiment referred to as the Cathode Ray Tube?

What is the name of Be(NO3)2∙4H2O?

Who discovered the electron’s charge by the famous experiment known as the Oil Drop Experiment?

Who discovered the electron’s charge by the famous experiment known as the Oil Drop Experiment?

Which of the following was not discussed by Dalton in his atomic theory?

Which of the following was not what John Dalton stated in his atomic theory?

Who was the Greek Philosopher that first stated that atoms exist and gave the name “ATOM?”

Determine the number of protons and the number of neutrons in an atom of 127I.

Determine the number of protons and the number of neutrons in an atom of 127I.

Which of the following was not discussed by Dalton in his atomic theory?