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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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{K^ + }\,\,\,{F^ - }

ionic radius of

{F^ - }

is more while atomic radius of

{K^ + }

View answer and explanation

Correct option: B

More than

{F^ - }

Option B (More than

{F^ - }

) is correct because the potassium ion has fewer electrons than the fluoride ion, but more protons, resulting in a smaller ionic radius, but the atomic radius of K is larger than F-

More Questions from CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The elements with zero electron affinity are S-I:

\mathrm{Cu}^{+2}

paramagnetic.

S-II: All the orbitals present in

\mathrm{Cu}^{+2}

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?