numbers in electron configuration

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Funmi Baruwa
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numbers in electron configuration

Postby Funmi Baruwa » Wed Nov 04, 2020 8:28 am

When writing electron configurations, what does the number in front of the configuration symbolize. for example in 1s^2 2s^2, what do the 1 and the 2 symbolize?

Faaizah Arshad 1H
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Re: numbers in electron configuration

Postby Faaizah Arshad 1H » Wed Nov 04, 2020 8:56 am

The number tells you what shell the electron is in. It is the principal quantum number (n).

JaesalSoma1E
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Re: numbers in electron configuration

Postby JaesalSoma1E » Wed Nov 04, 2020 8:56 am

The 1 and 2 are the principal quantum number, n, which tells you what shell the electron is in.

Kelly Tran 1J
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Re: numbers in electron configuration

Postby Kelly Tran 1J » Wed Nov 04, 2020 9:21 am

The number in front of the configuration (in your case 1 and 2) is the principal quantum number(n), which is called the shell and tells you the energy and size of the electron. The larger the value of n, the larger the electron, and the more energy it has.

OwenSumter_2F
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Re: numbers in electron configuration

Postby OwenSumter_2F » Wed Nov 04, 2020 10:46 am

And then the second number, the subscript, is the amount of orbitals in each subshell.

KhanTran3K
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Re: numbers in electron configuration

Postby KhanTran3K » Wed Nov 04, 2020 10:51 am

Hey!
Just to add on, as the value of "n" increases, or the principal quantum number, since it is at a higher energy level, this allows for more orbitals (s, p, d, f), which are represented by the letter l. Also, the number in the exponent spot represents the number of electrons in the orbital at that energy level.
Hope that helps! :)


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