Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- The statement (s) that are correct about the species O^ 2- , F^-, Na^+ and Mg^ 2+ . (A) All are isoelectronic (B) All have the...
- Given below are two statements: Statement I: The metallic radius of Na is 1.86 Å and the ionic radius of Na^+ is lesser than 1.86...
- The electron affinity value are negative for: A. Be → Be⁻ B. N → N⁻ C. O → O²⁻ D. Na → Na⁻ E. Al → Al⁻ Choose the most...
- The electron gain enthalpy (in kJ/mol) of fluorine, chlorine, bromine and iodine, respectively, are :
- The atomic radius of Ag is closest to :
- The third ionization enthalpy is minimum for :
- The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are :
- The increasing order of the atomic radii of the following elements is : (a) C (b) O (c) F (d) Cl (e) Br
- Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively, are basic,...
- Two elements A and B have similar chemical roperties. They don't form solid hydrogencarbonates, but react with nitrogen to form...
- Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) Sc (B) Cr (C) V (D) Ti (E) Mn...
- In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is
- The atomic number of the element unnilennium is-
- Match List I with List II List-I (Elements): A. Cl, S B. Ge, As C. Fr, Ra D. F, O List-II (Properties in their respective...
- The ionic radii of O^ 2- , F^- , Na^+ and Mg^ 2+ are in the order
- The correct order of the ionic radii of O^ 2- , N^ 3- , F^- , Mg^ 2+ , Na^+ and Al^ 3+ is :
- The atomic number of Unnilunium is _____.
- Arrange the following elements in increasing order of first ionization enthalpy: Li, Be, B, C, N Choose the correct answer from...
- Arrange the following elements in increasing order of electronegativity: N, O, F, C, Si Choose the correct answer from the...
- Identify the incorrect match. Name IUPAC Official Name (a) Unnilunium (i) Mendelevium (b) Unniltrium (ii) Lawrencium (c)...
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