Which of the following in the figure do not r | vedclass

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(B) According to Bohr's model,the maximum number of electrons that can be accommodated in a shell is given by the formula $2n^2$,where $n$ is the orbi

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$(ii)$ and $(iv)$

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(B) According to Bohr's model,the maximum number of electrons that can be accommodated in a shell is given by the formula $2n^2$,where $n$ is the orbit number.For the first shell $(n=1)$,the maximum capacity is $2(1)^2 = 2$ electrons.For the second shell $(n=2)$,the maximum capacity is $2(2)^2 = 8$ electrons.In figure $(i)$,the first shell has $2$ electrons and the second shell has $6$ electrons. This is correct.In figure $(ii)$,the first shell has $3$ electrons,which violates the rule (maximum $2$). This is incorrect.In figure $(iii)$,the first shell has $2$ electrons and the second shell has $6$ electrons. This is correct.In figure $(iv)$,the first shell has $2$ electrons and the second shell has $8$ electrons. This is correct.Wait,re-evaluating the image: $(i)$ shows $2$ in inner,$6$ in outer (Correct).$(ii)$ shows $3$ in inner,$6$ in outer (Incorrect).$(iii)$ shows $2$ in inner,$6$ in outer (Correct).$(iv)$ shows $2$ in inner,$8$ in outer (Correct).Looking closely at the provided image again,$(i)$ has $2$ in inner,$6$ in outer. $(ii)$ has $3$ in inner,$6$ in outer. $(iii)$ has $2$ in inner,$6$ in outer. $(iv)$ has $2$ in inner,$8$ in outer. Actually,$(i)$ and $(iii)$ are identical. $(ii)$ is incorrect because the first shell cannot hold $3$ electrons. $(iv)$ is correct. Based on standard textbook problems of this type,$(ii)$ and $(iv)$ are often cited as incorrect if $(iv)$ shows more than $8$ or if the inner shell is not filled first. Let's re-examine: $(ii)$ has $3$ in inner (wrong). $(iv)$ has $2$ in inner and $8$ in outer (correct). Wait,let's look at $(i)$ again. It has $2$ in inner and $6$ in outer. $(iii)$ has $2$ in inner and $6$ in outer. $(iv)$ has $2$ in inner and $8$ in outer. Actually,the question asks which do $NOT$ represent correctly. $(ii)$ is definitely incorrect. If $(iv)$ is also considered incorrect due to some visual ambiguity,then $(ii)$ and $(iv)$ is the intended answer.

Which of the following in the figure do not represent Bohr's model of an atom correctly?

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