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Q.

Consider Assertion and Reason given below.


Assertion (A) : With increase in atomic number the energies of the orbitals in the same subshell decrease due to increase in effective nuclear charge  (Zeff).
Reason (R ) : In an atom the (Zeff) experienced by the electron in different orbitals is in the order  3d > 3p > 3s
Choose the correct answer form the following:

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a

(A) is correct but (R) is wrong

b

(A) is wrong but (R) is correct

c

Both (A) and (R) are correct and (R) is the correct explanation of (A)

d

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

answer is C.

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Detailed Solution

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In an atom In an atom the (Zeff) experienced by the electron decrease with increase in azimuthal quantum number.

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Consider Assertion and Reason given below.Assertion (A) : With increase in atomic number the energies of the orbitals in the same subshell decrease due to increase in effective nuclear charge  (Zeff).Reason (R ) : In an atom the (Zeff) experienced by the electron in different orbitals is in the order  3d > 3p > 3sChoose the correct answer form the following: