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Q.

Statement I : In multi electronic atoms energy of atomic orbitals increases as 1s < 2s = 2p < 3s = 3p = 3d < 4s = 4p = 4d = 4f <........
Statement II : In multi electronic atoms energy of an electron depends completely on principal quantum number

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a

Both Statement I and Statement II are false

b

Statement I is false and Statement II is true

c

Both Statement I and Statement II are true

d

Statement I is true and Statement II is false

answer is D.

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Detailed Solution

Statement II : In multielectron atom, energy of orbitals is decided by (n + l) rule

Statement I : Energy of 2s < 2p

                   3s < 3p < 3d

                   4s < 4p < 4d < 4f

Statement I is false

Thus Statement II is false.

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Statement I : In multi electronic atoms energy of atomic orbitals increases as 1s < 2s = 2p < 3s = 3p = 3d < 4s = 4p = 4d = 4f <........ Statement II : In multi electronic atoms energy of an electron depends completely on principal quantum number