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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
1
Easy
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Analyzing
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Statement-I: In and block both metals and non-metals are present.
Statement-II: Electronegativity and ionisation enthalpy of metals is greater than non-metals.
Statement-II: Electronegativity and ionisation enthalpy of metals is greater than non-metals.
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Correct option: B
Both statement-I and II are incorrect
The correct answer is B (Both statement-I and II are incorrect) because metals and non-metals are present in both p and d blocks, but electronegativity and ionization enthalpy of metals are generally lower than non-metals.
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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?