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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The ionization enthalpy will be highest when the electron is to be removed from .............. if other factors are equal :

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Correct option: A

s-orbital

Option A (s-orbital) is correct because s-electrons are closest to the nucleus and experience the highest effective nuclear charge, making them the most difficult to remove.

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The compounds of the s-block elements, with the exception of lithium and ...

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refers to Among the following elements, the most electronegative is: The pair of amphoteric hydroxides is The element with atomic number 117 if discovered would be placed in The correct order of size among

\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

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is: The electronic configuration of four elements are given below. Which elements does not belong to the same family as others?