Class – 10 Practice Level 2 – Periodic Classification Of Elements set – 2 Leave a Comment / By anushka kumari / July 31, 2024 Class - 10 Practice Level 2 – Periodic Classification Of Elements set - 2 Total questions: 25 1. The element with atomic number 20 has what electron configuration? [Ne]3s²3p⁴ [Ar]4s² [Ne]3s²3p⁶4s² [Kr]5s²4d¹ None 2. Which of the following elements has the highest electronegativity in the second period? Lithium Carbon Nitrogen Oxygen None 3. Which group in the periodic table contains elements with the valence electron configuration ns²np⁵? Group 1 Group 2 Group 14 Group 17 None 4. Which of the following elements is least reactive? Fluorine Chlorine Bromine Argon None 5. Which element in the third period has the highest ionization energy? Sodium Magnesium Phosphorus Argon None 6. Which element in the fourth period exhibits the most metallic character? Potassium Calcium Scandium Titanium None 7. Which of the following elements has the lowest ionization energy in group 2? Beryllium Magnesium Calcium Barium None 8. The elements in the same group of the periodic table have: Similar atomic masses The same number of valence electrons The same number of electron shells Similar physical states None 9. Which element has the electron configuration [Ne]3s²3p¹? Sodium Magnesium Aluminium Silicon None 10. Which of the following elements has the largest atomic radius in the fourth period? Potassium Calcium Gallium Bromine None 11. Which of the following elements has the highest electron affinity in group 17? Fluorine Chlorine Bromine Iodine None 12. Which of the following elements is not a transition metal? Iron Copper Zinc Sodium None 13. Which pair of elements is most likely to form a covalent bond? Sodium and Chlorine Hydrogen and Chlorine Magnesium and Oxygen Potassium and Bromine None 14. Which element in group 14 has the highest melting point? Carbon Silicon Germanium Tin None 15. Which of the following elements has the lowest first ionization energy in the third period? Sodium Magnesium Aluminium Silicon None 16. The horizontal rows in the periodic table are called: Groups Periods Blocks Series None 17. Which element has an atomic number of 10? Neon Sodium Magnesium Aluminium None 18. Which of the following elements has the highest electronegativity in group 15? Nitrogen Phosphorus Arsenic Antimony None 19. Which of the following elements has the electron configuration [Ar]4s²3d⁶? Iron Cobalt Nickel Copper None 20. Which element in group 1 is the least reactive? Lithium Sodium Potassium Rubidium None 21. Which of the following elements has the highest second ionization energy? Sodium Magnesium Aluminium Silicon None 22. Which element has the most metallic character in the second period? Lithium Beryllium Boron Carbon None 23. Which element has an atomic number of 7? Nitrogen Oxygen Fluorine Neon None 24. Which group in the periodic table contains the alkaline earth metals? Group 1 Group 2 Group 13 Group 14 None 25. Which element in group 16 has the highest electronegativity? Oxygen Sulphur Selenium Tellurium None 1 out of 25 Time's up
Sign in with Google
Sign in with Facebook