Trends in Atomic Radius & Ionisation Energy: JEE Questions & Solutions

A p-block element E and hydrogen form a binary cation (EHₓ)⁺, while EH₃ on treatment with K₂HgI₄ in alkaline medium gives a precipitate of…

Given below are two statements: Statement I: The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in…

The correct trend in the first ionization enthalpies of the elements in the 3^rd period of periodic table is:

Given below are two statements: Statement I: The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of…

The correct order of C, N, O and F in terms of second ionisation potential is

In period 4 of the periodic table, the elements with highest and lowest atomic radii respectively are:

Given below are the atomic numbers of some group 14 elements. The atomic number of the element with the lowest melting point is:

The successive 5 ionisation energies of an element are 800 kJ/mol, 2427 kJ/mol, 3658 kJ/mol, 25024 kJ/mol and 32824 kJ/mol, respectively.…

Given below are two statements: Statement (I): The first ionization energy of Pb is greater than that of Sn. Statement (II): The first…

Consider the following elements In, Tl, Al, Pb, Sn and Ge. The most stable oxidation states of elements with highest and lowest first…

The incorrect decreasing order of atomic radii is:

The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is:

First ionisation enthalpy values of the first four group 15 elements are given below. Choose the correct value for the element that is a…

The correct orders among the following are A. Atomic radius: B < Al < Ga < In < Tl B. Electronegativity: Al < Ga < In < Tl < B C. Density:…

Given below are two statements: Statement (I): The first ionisation enthalpy of group 14 elements is higher than the corresponding elements…

The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:

Choose the incorrect trend in the atomic radii (r) of the elements:

The atomic number of the element from the following with lowest 1^st ionization enthalpy is:

Given below are two statements: Assertion A: The first ionisation enthalpy decreases across a period. Reason R: The increasing nuclear…

The element having the highest first ionization enthalpy is:

Given below are the two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R). Assertion (A): There is a…

Match List-I with List-II: | List-I | List-II | |---|---| | A. Melting point (K) | I. Tl > In > Ga > Al > B | | B. Ionic Radius (M⁺³/pm) |…

The correct order of hydration enthalpies is: (A) K⁺ (B) Rb⁺ (C) Mg²⁺ (D) Cs⁺ (E) Ca²⁺ Choose the correct answer from the options given…

Given below are two statements: Statement I: The decrease in first ionization enthalpy from B to Al is much larger than that from Al to Ga.…

The correct increasing order of the ionic radii is:

Ion having the highest hydration enthalpy among the given alkaline earth metal ions is:

Ion having highest hydration enthalpy among the given alkaline earth metal ions is:

Given below are two statements: Statement I: Lithium and Magnesium do not form superoxide. Statement II: The ionic radius of Li⁺ is larger…

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The energy required to…

For elements B, C, N, Li, Be, O and F, the correct order of first ionization enthalpy is: