0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. What element is represented by the symbol M?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Word equation for k+ h2o yield koh + h2

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.