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Periodic Table and Periodicity

43 questions · Chemistry · NEET
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Periodic Table and Periodicity

43 questions · Chemistry · NEET

  1. Which of the following statements are true? A. Unlike Ga that has a very high melting point, Cs has a very low melting point. B. On Pauling scale, the electronegativity values of N and Cl are not the same. C. Ar,K+,Cl−,Ca2+…2025 · Q106 · MCQ
  2. Which among the following electronic configurations belong to main group elements? A. [Ne]3 s1 B. [Ar]3 d34 s2 C. [Kr]4d105s25p5 D. [Ar]3 d104 s1…2025 · Q129 · MCQ
  3. Arrange the following elements in increasing order of first ionization enthalpy: Li,Be,B,C,N Choose the correct answer from the options given below:2024 · Q109 · MCQ
  4. Arrange the following elements in increasing order of electronegativity: N, O, F, C, Si Choose the correct answer from the options given below :2024 · Q113 · MCQ
  5. The correct decreasing order of atomic radii (pm) of Li,Be,B and C is2024 · Q101 · MCQ
  6. Match List I with List II : Identify the correct answer from the options given below : Includes table2024 · Q108 · MCQ
  7. Which of the following is correctly matched?2023 · Q102 · MCQ
  8. The correct sequence given below containing neutral, acidic, basic and amphoteric oxide each, respectively, is2023 · Q116 · MCQ
  9. The correct order of first ionization enthalpy for the given four elements is :2022 · Q101 · MCQ
  10. Decrease in size from left to right in actinoid series is greater and gradual than that in lanthanoid series due to2022 · Q112 · MCQ
  11. Fluorine is a stronger oxidising agent than chlorine because : (a) F-F bond has a low enthalpy of dissociation. (b) Fluoride ion (F−) has high hydration enthalpy. (c) Electron gain enthalpy of fluorine is less negative than chlorine. (d)…2022 · Q115 · MCQ
  12. If first ionization enthalpies of elements X and Y are 419 kJ mol−1 and 590 kJ mol−1, respectively and second ionization enthalpies of X and Y are 3069 kJ mol−1 and 1145 kJ mol−1, respectively. Then correct statement is :2022 · Q122 · MCQ
  13. The IUPAC name of an element with atomic number 119 is2022 · Q92 · MCQ
  14. Gadolinium has a low value of third ionisation enthalpy because of2022 · Q96 · MCQ
  15. Identify the incorrect match. Includes table2020 · Q101 · MCQ
  16. Match the following : Which of the following is correct option? Includes table2020 · Q116 · MCQ
  17. For the second period elements the correct increasing order of first ionization enthalpy is :2019 · Q102 · MCQ
  18. The correct order of atomic radii in group 13 elements is2018 · Q101 · MCQ
  19. Which of the following oxides is most acidic in nature?2018 · Q102 · MCQ
  20. The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration ?2017 · Q104 · MCQ
  21. In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?2016 · Q102 · Multiple correct
  22. The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?2015 · Q95 · MCQ
  23. Which of the following orders of ionic radii is correctly represented ?2014 · Q105 · MCQ
  24. Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?2013 · Q105 · MCQ
  25. Identify the wrong statement in the following.2012 · Q112 · MCQ
  26. What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV?2011 · Q79 · MCQ
  27. Among the following which one has the highest cation to anion size ratio ?2010 · Q72 · MCQ
  28. Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is2010 · Q73 · MCQ
  29. The correct order of the decreasing ionic radii among the following isoelectronic species is2010 · Q119 · MCQ
  30. Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl ?2010 · Q120 · MCQ
  31. Amongst the elements with following electronic configurations, which one of them may have the highest ionisation energy ?2009 · Q112 · MCQ
  32. Which one of the following arrangements does not give the correct picture of the trends indicated against it ?2008 · Q109 · Multiple correct
  33. Which one of the following ionic species has the greatest proton affinity to form stable compound ?2007 · Q94 · MCQ
  34. Identify the correct order of the size of the following :2007 · Q95 · MCQ
  35. With which of the following electronic configuration an atom has the lowest ionisation enthalpy ?2007 · Q96 · MCQ
  36. Which one of the following orders is not in accordance with the property stated against it?2006 · Q105 · MCQ
  37. Which one of the following orders is not in accordance with the property stated against it ?2006 · Q111 · MCQ
  38. Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?2005 · Q107 · MCQ
  39. Ionic radii are2004 · Q101 · MCQ
  40. The ions O2−, F−, Na+, Mg2+ and Al3+ are isoelectronic. Their ionic radii show2003 · Q111 · MCQ
  41. Which of the following order is wrong?2002 · Q100 · MCQ
  42. Correct order of 1st ionization potential among following elements Be, B, C, N, O is2001 · Q100 · MCQ
  43. Which statement is wrong ?2000 · Q108 · MCQ