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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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Among the statements (I-IV), the correct ones are:
I) has smaller atomic radius compared to
II) has higher ionisation enthalpy than
III) Charge/radius ratio of is greater than that of
IV) Both and form mainly covalent compounds.
I) has smaller atomic radius compared to
II) has higher ionisation enthalpy than
III) Charge/radius ratio of is greater than that of
IV) Both and form mainly covalent compounds.
View answer and explanation
Correct option: B
(I), (II) and (IV)
Option B ((I), (II) and (IV)) is correct because Be has a smaller atomic radius than Mg, higher ionization enthalpy than Al, and both form mainly covalent compounds.
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?