An atom in the ground state has seven valence electrons. this atom could be an atom of which element?
(1) calcium (3) oxygen
(2) fluorine (4) sodium

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?