Among the following,the incorrect statement i | vedclass

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(B) Consider the following statements.$(I)$ According to Pauli's exclusion principle,no two electrons in an atom can have the same set of four quantum

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the maximum number of electrons in the shell with principal quantum number,$n$ is equal to $n^2+2$

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(B) Consider the following statements.$(I)$ According to Pauli's exclusion principle,no two electrons in an atom can have the same set of four quantum numbers. Thus,statement $(a)$ is correct.$(II)$ The maximum number of electrons in a shell with principal quantum number $n$ is given by $2n^2$,not $n^2+2$. Thus,statement $(b)$ is incorrect.$(III)$ Electrons in an orbital must have opposite spin,i.e.,$m_s = +\frac{1}{2}$ and $-\frac{1}{2}$. Thus,statement $(c)$ is correct.$(IV)$ According to the Aufbau principle,in the ground state of atoms,orbitals are filled in the order of their increasing energies. Thus,statement $(d)$ is correct.

Among the following,the incorrect statement is

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