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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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Medium
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Analyzing
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Given below are two statements:
Statement I: The pentavalent oxide of group-15 element, , is less acidic than trivalent oxide, , of the same element.
Statement II: The acidic character of trivalent oxide of group 15 elements, , decreases down the group.
In light of the above statements, choose most appropriate answer from the options given below:
Statement I: The pentavalent oxide of group-15 element, , is less acidic than trivalent oxide, , of the same element.
Statement II: The acidic character of trivalent oxide of group 15 elements, , decreases down the group.
In light of the above statements, choose most appropriate answer from the options given below:
View answer and explanation
Correct option: D
Statement I false, but Statement II is true
Option D (Statement I false, but Statement II is true) is correct because the pentavalent oxide is more acidic than the trivalent oxide, and the acidic character of trivalent oxides decreases down the group.
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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?