Which of the following would you predict to have a positive value for º ?

agcl(s) → ag+(aq) + cl-(aq)

h2o(g) → h2o(l)

2 na(s) + cl2(g) → 2nacl(s)

br2(l) → br2(s)

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.