22 JEE Main 2025 Classification of Elements and Periodicity in Properties previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2025 previous-year questions from the Classification of Elements and Periodicity in Properties chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Classification of Elements and Periodicity in Properties chapter hub.
An element ' Eⁱme has the ionisation enthalpy value of 374 ~kJ ~mol⁻¹ . ' E ' reacts with elements A, B, C and D with e…
Given below are the pairs of group 13 element showing their relation in terms of atomic radius. (B Al),(Al Ga),(Ga In)…
The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:
The atomic number of the element from the following with lowest 1st ionisation enthalpy is :
The element that does not belong to the same period of the remaining elements (modern periodic table) is:
Electronic configuration of four elements A, B, C and D are given below : (A) 1 ~s² 2 ~s² 2 p³ (B) 1 ~s² 2 ~s² 2 p⁴ (C)…
The correct orders among the following are Atomic radius : B Al Ga In Tl Electronegativity : Al Ga In Tl B Density : Tl…
Which of the following statements are correct? A. The process of the addition an electron to a neutral gaseous atom is…
The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :
Given below are two statements : Statement (I) : An element in the extreme left of the periodic table forms acidic oxid…
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