What is true of all atoms?

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

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.