How many sublevels are contained in each of these principal energy levels?an1 bn2 cn3 dn4How many electrons are in the highest occupied energy level of these atoms?aBarium bSodium cAluminum dOxygenWhich electron transition results in the emission of energy?a3p to 3sb3p to 4pc2s to 2pd1s to 2s
n1 has 1 s sublevel n2 has an s and p sublevels, so there are 2 n3 has s, p and d sublevels, so there are 3 n4 has s, p, d, and f sublevels, so there are 4 Don't have a periodic table in front of meSodium is group 1 so has 1 valence electronBarium is in group 2, so has 2 electronsAluminum would have 3 electrons, and oxygen would have 63p to 3s
I have never heard such nonsense in all my life!
Not trueJust tell them not to do anything dangerous with it like eating it or bite on it and point out that it can be sharp.
Aluminum occurs naturally in many foodsIt's pretty unlikely that setting their sandwich down on aluminum foil is harmful to your child's healthNow, if they finish every meal by eating the foil, that might not be goodBut a kid would have to be pretty weird to do thatThere is nothing harmful about putting food on aluminum foil.
