Statement - 1: 'La' should be the f - block element according to Aufbau principle.
Statement - 2: 57th electron exceptionally enters into the 5d - orbital.

Statement - 1 is true, Statement - 2 is true and Statement - 2 is correct explanation for Statement - 1

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Statement - 1 is true, Statement - 2 is true and Statement - 2 is NOT the correct explanation for Statement - 1

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Statement - 1 is true, Statement - 2 is false

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Statement - 1 is false, Statement - 2 is true

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Solution

The correct option is B Statement - 1 is true, Statement - 2 is true and Statement - 2 is NOT the correct explanation for Statement - 1
$L a \to [X e] 6 s^{2} 5 d^{1}; L a \to$ exception of Aufbau's rule

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Statement - 1: 'La' should be the f - block element according to Aufbau principle. Statement - 2: 57th electron exceptionally enters into the 5d - orbital.

The correct option is B Statement - 1 is true, Statement - 2 is true and Statement - 2 is NOT the correct explanation for Statement - 1La→[Xe]6s25d1; La→ exception of Aufbau's rule

Statement - 1: 'La' should be the f - block element according to Aufbau principle.
Statement - 2: 57th electron exceptionally enters into the 5d - orbital.

The correct option is B Statement - 1 is true, Statement - 2 is true and Statement - 2 is NOT the correct explanation for Statement - 1
$L a \to [X e] 6 s^{2} 5 d^{1}; L a \to$ exception of Aufbau's rule