JEE Main 2025 — Classification of Elements and Periodicity in Properties Question with Solution
JEE Main 2025 (3 Apr Shift 1)
Question
Which of the following statements are correct?
A. The process of the addition an electron to a neutral gaseous atom is always exothermic
B. The process of removing an electron from an isolated gaseous atom is always endothermic
C. The ionization energy of the boron is less than that of the beryllium
D. The electronegativity of C is 2.5 in and
E. Li is the most electropositive among elements of group I
Choose the correct answer from the options gives below
A. The process of the addition an electron to a neutral gaseous atom is always exothermic
B. The process of removing an electron from an isolated gaseous atom is always endothermic
C. The ionization energy of the boron is less than that of the beryllium
D. The electronegativity of C is 2.5 in and
E. Li is the most electropositive among elements of group I
Choose the correct answer from the options gives below
Choose an option
Show full solutionCorrect option: A
Correct answer
AB & C only
Step-by-step explanation
(A) The process of adding an to a neutral gaseous atom is not always exothermic it may be exothermic or endothermic.
(C)
In Be 2 s subshell in fully filled
So, need high energy to remove as compared to B.
(D)
due to partially positive charge
So, EN of
(E) Cs is most electropositive.
(C)
In Be 2 s subshell in fully filled
So, need high energy to remove as compared to B.
(D)
due to partially positive charge
So, EN of
(E) Cs is most electropositive.
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This is a previous-year question from JEE Main 2025, covering the Classification of Elements and Periodicity in Properties chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.