Cows cannot produce their own food. they consume grass in order to get energy for life processes. cows are a. heterotrophs b. producers c. decomposers d. autotrophs

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

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.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166