6the elements in group 2 have similar chemical properties because each atom or these elements has the same
(1) atomic number
(2) mass number
(3) number of electron shells
(4) number of valence electrons

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Which of the following electromagnetic waves can create ions?

Which change to the system wood cause the freely-moving piston to lower?