Q.

Statement(I): For a given principal quantum number, s, p, d, f…, subshells, all have different energies.Statement(II): Mutual repulsion exists among the electrons in a multielectron atoms.

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a

Both Statement(I) and Statement(II) are correct.

b

Statement(I) is correct and statement(II) is incorrect.

c

Statement(I) is incorrect and statement(II) is correct.

d

Both statement(I) and statement(II) are incorrect

answer is A.

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Detailed Solution

For a given principal quantum number , s, p, d, f,... subshell, all have different energies because mutual repulsion exists among the electrons in a multielectron atoms
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Statement(I): For a given principal quantum number, s, p, d, f…, subshells, all have different energies.Statement(II): Mutual repulsion exists among the electrons in a multielectron atoms.