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    at GCSE level we learnt that the electronic structure was 2882 but now it’s changed at AS-level because of the subshells. Because of what we learnt at GCSE I am not sure I understand how to sub shells work in electronic structure
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    (Original post by Westsidegirl)
    at GCSE level we learnt that the electronic structure was 2882 but now it’s changed at AS-level because of the subshells. Because of what we learnt at GCSE I am not sure I understand how to sub shells work in electronic structure
    What you learnt at GCSE was just a simplification. That's not how electronic configurations are. I had that same problem. According to GCSE chemistry, electrons 'orbit' the nucleus but that's not true, they are actually located in 'orbitals' arranged according to energy levels. Getting away from the concept of 2,8,8,2 is one of the difficult mental leaps that you have to make at the beginning of AS level chemistry.
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    (Original post by Rohit_Rocks10)
    What you learnt at GCSE was just crap. That's not how electronic configurations are. I had that same problem. According to GCSE chemistry, electrons 'orbit' the nucleus but that's not true, they are actually located in 'orbitals' arranged according to energy levels. Getting away from the concept of 2,8,8,2 is one of the difficult mental leaps that you have to make at the beginning of AS level chemistry.
    It was a simplification, not crap. Just like how what you're taught at A Level is a simplification.
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    (Original post by alow)
    It was a simplification, not crap. Just like how what you're taught at A Level is a simplification.
    Yeah sorry. Edited.
 
 
 
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