He principal quantum number, n, represents the: a sub level of an electron b main energy level of a proton c main energy level of an electron d sub level of a proton

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+