Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- For electron gain enthalpies of the elements denoted as _ eg H, the incorrect option is
- The increasing order of atomic radii of the following Group 13 elements is
- Which one of the following alloys contains a non-metal as one of its constituent ?
- Which one among the following elements is known to be discovered the earliest ?
- Outermost electronic configurations of four elements A, B, C, D are given below : (A) 3s^ 2 (B) 3s^ 2 3p^ 1 (C) 3s^ 2 3p^ 3 (D)...
- The correct order of increasing ionic radii
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The...
- The correct decreasing order for metallic character is
- Which of the following pair is not isoelectronic species? (At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
- In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical? (a) Rb and Cs...
- Element "E" belongs to the period 4 and group 16 of the periodic table. The valence shell electron configuration of the element,...
- The first ionization enthalpy of Na, Mg and Si, respectively, are: 496, 737 and 786 kJ mol^ -1 . The first ionization enthalpy...
- Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The first...
- The difference between electron gain enthalpies will be maximum between :
- In chromyl chloride, the number of d-electrons present on chromium is same as in (Given at no. of Ti : 22, V : 23, Mn : 25, Fe :...
- The correct order of electronegativity for given elements is
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The energy...
- The correct order of metallic character is
- For elements B, C, N Li, Be, O and F, the correct order of first ionization enthalpy is :
- The pair of lanthanides in which both elements have high third-ionization energy is -
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