How many electrons are in the outermost energy level of a neut...

Question

How many electrons are in the outermost energy level of a neutral carbon atom?

Accepted Answer

Hello everyone today. We are being asked to find the number of inner outer and Beyonce electrons in the following elements. First, let's separate our categories of electrons, oxygen has a total of eight Electrons due to it being the 8th element in the periodic table. And since it's neutral, the number of protons equals the number of electrons. Its configuration holds as one is to to S two, two P. Four. Some of the exponents of the higher ordered sub shells in this case are two S and R. Two P. Is going to give us the total number advanced electrons. We have the two plus the four which gives us six. And this is also equal to the number of outer electrons as well. To find the inner electrons. We simply take the total number of electrons eight and we subtracted by the number of valence electrons six giving us two valence electrons or two inner electrons. Excuse me. Next we have carbon, carbon has a total of six electrons and its configuration Is one S 2 to us too. Two P. Two. Once again, the number of valence electrons is equal to the sum of the exponents of the higher ordered sub shells. In this case that's too And we have two plus two which gives us four. This is also equal to the number of outer electrons as well. To find the inner electrons. We once again take the total number of electrons. Six electrons and we subtracted by the vans electrons for giving us two electrons. Next we have iron that has 26 electrons total and its configuration, it's noble gas configuration is argon and brackets followed by for us to And three D 6. Once again the number of valence electrons is equal to the exponents of the higher order to sub shells. And in this special case that is going to be four as well as three. So we have two plus six giving us a total of eight valence electrons In this special case as well. Taking the higher ordered sub shell. In this case that's the four S 2. We're gonna get to outer electrons present To get the number of inter electrons. We take the total number of electrons 26 And we subtract it by the valence electrons eight giving us inner electrons Magnesium has 12 electrons present. And its configuration is written as one is to to S two, two, P 6 and finally three S 2. Once again the number of valence electrons is equal to the exponents of the higher ordered sub shells. And in this case that is a three. So we have two valence electrons. And in this case the number of outer electrons is the same as well. And to find the number of inner electrons, we take the total number of electrons and subtract it By the number of valence electrons. In this case, that's 12 -2 gives us 10 electrons last but not least we have sulfur which has 16 electrons total and its configuration is one is to to S two, two P six, three, S. 2 and finally three p. 4. The number of valence electrons is equal to the exponents of the higher ordered sub shells, which in this case that is three. So we have two plus four giving us six valence electrons. Once again, this is the same for the number of outer electrons And to find the number of electrons we take the total number of electrons and we subtract it by the number of valence electrons. In this case, that's 16 -6, giving us 10 electrons as well, giving us our final answers. I hope this helped. And I'll see you in the next video.

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How many electrons are in the outermost energy level of a neutral carbon atom?

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