Class 12

d-and f-Block Elements question bank (Chemistry)

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Q1.

The electronic configuration of silver atom in ground state is

(A)

$[Kr] 3d^{10} 4s^{1}$

(B)

$[Xe] 4f^{14} 5d^{10} 6s^{1}$

(C)

$[Kr] 4d^{10} 5s^{1}$

(D)

$[Kr] 4d^{9} 5s^{2}$

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Q2.

Elements up to atomic number $103$ have been synthesized and studied. If a newly discovered element is found to have an atomic number $106,$ its electronic configuration will be

(A)

$[Rn] 5f^{14} 6d^4 7s^2$

(B)

$[Rn] 5f^{14} 6d^1 7s^2 7p^3$

(C)

$[Rn] 5f^{14} 6d^6 7s^0$

(D)

$[Rn] 5f^{14} 6d^4 7s^2$

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