DP Chemistry (last assessment 2024)

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Question 22M.2.sl.TZ2.2b(i)

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.sl.TZ2.2b(i)
Level sl Paper 2 Time zone TZ2
Command term Suggest Question number b(i) Adapted from N/A
b(i).
[Maximum mark: 2]
22M.2.sl.TZ2.2b(i)

Electrons are arranged in energy levels around the nucleus of an atom.

The diagram represents possible electron energy levels in a hydrogen atom.

(b(i))

All models have limitations. Suggest two limitations to this model of the electron energy levels.

[2]

Markscheme

Any two of:

does not represent sub-levels/orbitals ✔

only applies to atoms with one electron/hydrogen ✔

does not explain why only certain energy levels are allowed ✔

the atom is considered to be isolated ✔

does not take into account the interactions between atoms/molecules/external fields ✔

does not consider the number of electrons the energy level can fit ✔

does not consider probability of finding electron at different positions/OWTTE ✔

 

Do not accept “does not represent distance «from nucleus»”.

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