Why is nickel located to the right of cobalt on the periodic table? a) nickel has one more proton than colbalt b) cobalt has one more neutron than nickel c) colbalt has a smaller atomic radius than nickel d) nickel has a smaller mass number than cobalt

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.