What volume of a 0.14 M calcium hydroxide solution is required to completely neutralize 1.2g acidic solution?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Which other elements contain the same number of outer electrons as sodium

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