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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
1
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The electronic configurations of four elements are :
(i)
(ii)
(iii)
(iv)
Which one of the following statements about these elements is not correct?
(i)
(ii)
(iii)
(iv)
Which one of the following statements about these elements is not correct?
View answer and explanation
Correct option: B
(ii) is a d-block element
The correct answer is (ii) is a d-block element (B) because is an f-block element (Lanthanide) since the last electron enters the f-orbital after filling the d-orbital.
More Questions from CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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The elements with zero electron affinity are
S-I: paramagnetic.
S-II: All the orbitals present in ion are doubly occupied. Which of the following is the most electropositive element? The law of Octaves is not applicable to: Assertion (A): Mendeleev's arranged elements in horizontal rows and vertical columns.
Reason (R): Mendeleev's ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Which of the following electronic configuration does not belong to same block as others?
S-II: All the orbitals present in ion are doubly occupied. Which of the following is the most electropositive element? The law of Octaves is not applicable to: Assertion (A): Mendeleev's arranged elements in horizontal rows and vertical columns.
Reason (R): Mendeleev's ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Which of the following electronic configuration does not belong to same block as others?