please help me with the electron vonfiguration of these elements, and I also need to know the number of valence electronsAnything you can do will help, Thank you so much.-Lead-Aluminum-Chromium-Iodine-Mercury-Sodium-Strontium-Oxygen-Bromine-Potassium-Silicon-Zirconium-Phosphorus-GoldOnce again, Thank you!
The solvent travels up the paper by capilary action, similar to the way a whole towel gets wet if the corner dips in the bath tub.The spot should be above the liquid level so that it will not dissolve out into the solventThe beaker is covered to prevent evaporation of the solvent out into the room where it is being doneSome solvents are very volatile.
Lead: [Xe]4f14 5d10 6s2 6p2 Aluminum: [Ne] 3s2 3p1 Chromium: [Ar] 3d5 4s1 Iodine: [Kr] 4d10 5s2 5p5 Mercury: [Xe] 4f14 5d10 6s2 Sodium: [Ne] 3s1 Strontium: [Kr] 5s2 Oxygen: 1s2 2s2 2p4 Bromine: [Ar] 3d10 4s2 4p5 Potassium: [Ar] 4s1 Silicon: [Ne] 3s2 3p2 Zirconium: [Kr] 4d2 5s2 Phosphorus: [Ne] 3s2 3p3 Gold: [Xe] 4f14 5d10 6s1 Once you get into the transition metals, all bets are offYou'll simply have to memorize the exceptions to the configuration rules, otherwise electron configuration follows a nice formFill up s shells before p, before d, before fFill each similar orbital with one electron then go back and fill in the rest before moving to the next shell.
if the spot touches the solvent it will bleed in all directions and you'll ge a messyou want the tights seal so the environment is saturated with solvent (it helps trust me)
to protect the spots from dissolving in the solvent and we must close the beaker to make the pressure stable inside
