HLP ASAPP IM AWARDING 30 points An atomic anion with a charge of -2 has the following electron configuration:
1s^22s^22p^63s^23p^6

What is the chemical symbol for the ion?

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

What is the vapor pressure of a solution with a benzene to octane?