drea
New Member
Posts: 3 
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Post by drea on Nov 30, 2015 12:47:56 GMT
I was doing 2015 #1c
n=3 principal energy level. It asked what is the total number of orbitals and electrons at this enery level. Is the answer 9 orbitals? (5d orbitals, 3p orb, and 1s)? and are the total number of electrons 18? 2 for each orbital?
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sarah
New Member
Posts: 17
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Post by sarah on Nov 30, 2015 15:48:09 GMT
Yes the total # of orbitals is 9 but I think its 3s 3p and 3d
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sarah
New Member
Posts: 17
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Post by sarah on Nov 30, 2015 15:48:41 GMT
I'm not sure
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sarah
New Member
Posts: 17
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Post by sarah on Nov 30, 2015 16:21:12 GMT
Wait nevermind you're correct
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Post by Admin on Dec 1, 2015 20:34:07 GMT
I was doing 2015 #1c n=3 principal energy level. It asked what is the total number of orbitals and electrons at this enery level. Is the answer 9 orbitals? (5d orbitals, 3p orb, and 1s)? and are the total number of electrons 18? 2 for each orbital? yes that's correct. For n=3, the values of l are 0, 1 and 2 for these values of: l=0 --> s subshell l=1 ---> p subshell l=2 ---> d subshell so we know we have 3s, 3p, and 3d subshells for the 3s subshell, l=0, so the value of m = 0 ---> only 1 value of m, hence only one 3s orbital for the 3p subshell where l=1, m could take the values of -1, 0 and 1 ---> since there are 3 values of m, we know we have three 3p orbitals. for the 3d subshell where l=2, m= -2, -1, 0, 1, 2 ----> five values of m means we have five 3d orbitals so that's a total of 9 orbitals. each orbital holds 2 electrons = 18 electrons total. |
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