FeCl3(aq) + 3 NaOH(aq) ——Fe(OH)3(s) + 3 NaCl(aq) Determine the mass of sodium chloride that should precipitate when a solution containing 3.00 g of Iron (III) chloride reacts with an excess of sodium hydroxide.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the volume increases

it is stable as it is in group 0 which have full outer shells of electrons