1st (∆H1) and 2nd (∆H2) Ionization Enthalpies (in kJ mol–1) andthe (∆egH) Electron Gain Enthalpy (in kJ mol–1) of a few elements are given below: ElementsΔH1ΔH2ΔegHI5207300–60II4193051–48III16813374–328IV10081846–295V23725251 +48VI7381451–40The most reactive metal is: 1.VI2.III3.I4.II NEET 2025 Level Classification of Elements and Periodicity in Properties Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers, NEETprep,neet questions, neet practice questions, neet practice paper,neetprep, neetprep practice questions, mock test neet, neet physics questions, neet mcq, neet questions with answers, neet questions with explanations,NEET attempt,NEET test series, AIIMS Delhi preparation,NEET rank rewards, NTA level NEET questions, NEET online coaching,physicswallah neet, physicswala neet,allen neet, akash neet, physics online course, chemistry online course,biology online course, zoology online course, botany online course, Aryan Raj Singh NEET course

Assertion (A):	The helium atom has the highest ionization energy among all the elements.
Reason (R):	Helium is the smallest atom among all the elements.

Statement I:	Dissociation is the process of separation of ions in the water already existing as such in the solid state of the solute like NaCl.
Statement II:	Ionization corresponds to a process in which neutral molecules split into charged ions in the solution.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

1.	Both Statement I and Statement II are true.
2.	Both Statement I and Statement II are false.
3.	Statement I is correct and Statement II is false.
4.	Statement I is incorrect and Statement II is true.