Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- Ionic radii are :-
- Among the following series of transition metal ions, the one where all metal ions have 3d^2 electronic configuration is :-
- With which of the following configuration an atom has the lowest ionization enthalpy?
- The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr (24) and Mn (25) is
- Which one of the following arrangements does not give the correct picture of the trends indicated against it?
- Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is :
- Among the following which one has the highest cation to anion size ratio?
- Which of the following ions has electronic configuration [ Ar ]3d^6?
- The correct order of the decreasing ionic radii among the following isoelectronic species is:
- Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O,...
- What is the value of electron gain enthalpy of Na ^+ if IE _1 of Na = 5.1 eV ?
- Which of the following orders of ionic radii is correctly represented?
- Be ^ 2+ is isoelectronic with which of the following ions?
- The species Ar, K ^+ and Ca ^ 2+ contain the same number of electrons. In which order do their radii increase ?
- The number of d-electrons in Fe ^ 2+ (Z = 26) is not equal to the number of electrons in which one of the following?
- In which of the following options the order of arrangement does not agree with the variation of property indicated against it?
- The electronic configurations of Eu (Atomic no. 63), Gd (Atomic No. 64) and Tb (Atomic No. 65) are:
- The element Z = 114 has been discovered recently. It will belong to which of the following family group and electronic...
- The correct order of atomic radii in group 13 elements is
- For the second period elements the correct increasing order of first ionisation enthalpy is:
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