Why was it important that Rutherford and his colleagues used alpha particles for their experiment?​

The excretory system,need answers for all: )

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust