Which of the following do not represent electronic configuration correctly?

(a) & (b)

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(b) & (d)

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(b) & (c)

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(a) & (d)

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Solution

The correct option is C (b) & (c)
(b) & (c) do not represent Electronic configuration correctly.
In (b), K shell has 3 electrons. A maximum of 2 electrons are possible in K shell.
In (c), L shell has 9 electrons. A maximum of 8 electrons are possible in L shell.

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Question 02

Which of the following options does not represent ground state electronic configuration of an atom ?

(a) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{8} 4 s^{2}$ (b) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9} 4 s^{2}$ (c) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$ (d) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$

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Which of the following do not represent electronic configuration correctly?

The correct option is C (b) & (c) (b) & (c) do not represent Electronic configuration correctly.In (b), K shell has 3 electrons. A maximum of 2 electrons are possible in K shell.In (c), L shell has 9 electrons. A maximum of 8 electrons are possible in L shell.

The correct option is C (b) & (c)
(b) & (c) do not represent Electronic configuration correctly.
In (b), K shell has 3 electrons. A maximum of 2 electrons are possible in K shell.
In (c), L shell has 9 electrons. A maximum of 8 electrons are possible in L shell.