IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry - Periodic table relating with electrons in orbitals.

Anurag.Seth

Q1) An orbital can have a maximum of 2electrons.

Suppose orbitals have 3electrons each(although it's impossible; clockwise & anticlockwise spin would get disturbed and much more) but then too,

what would be the number of groups in the periodic table in this condition.

nunoxic

is this a factual question or just something u though on ur way back from skool ?.....good question though ......ill think about it

shvetha

anurag,
u doubt is true but actually its just impossible for a orbital to have 3 electrons.

dude

umang

Hey dude !

I hope u dont mind explaining the answer !!!!!

Anurag.Seth

I thought the answer myself.

In the s block of Periodic table, due to an increase in an e- , it would now have 3 groups, i.e. maximum e- = 1s³

thus groups in s-block=3

In the d-block there are 5 orbitals and hence increment in no. of e- =5.

i.e. max. e- = 5d¹⁵

thus groups added=5.

thus total groups in d-block=10+5=15.

In the p-block there are 3 orbitals and hence increment in no. of e- = 3

i.e. max. e- = 6p⁹

thus groups added=3

thus total groups in p-block = 6+3=9

to talk of f-block would be a foolish thing.

Hence,

Total groups in Periodic table with each orbital having three e-

= 3(s-block) + 15(d-block) + 9(p-block)

=27

Hence according to my analysis the answer must be 27, if I'm wrong somewhere plz let me know.

umang

Hey anurag ,

yes , I also got 27 as the answer . My approach is just as yours . I dont think the answer is wrong !!!

umang

Happy ?????

smriti.mathur

If there be three electrons in one orbital, then the no. of groups would be 6

Anurag.Seth

Smriti Mam,

Please explain the way you thought it to be 6 groups.

smriti.mathur

Hey Anurag, according to your calculation, there is an overall increase in the total number of electrons, ie, there is an increase in the total number of elements known. What I have done is , adjusted the same electrons , three in one orbital, keeping the number of elements same.So if there would be three electrons in one orbital, the no. of groups will shrink.

smriti.mathur

Well, the number of groups would be 12 not 6.

Anurag.Seth

Smriti Mam,

Still I didn't get through your explanation, plz explain a bit more.

umang

Smriti mam ,

I hav understood what u hav done , but am not getting how u did it . Pls explain !!!!!!!

Thank you !

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