Class 10 Practice – Level 1 -Periodic Classification Of Elements Leave a Comment / By Gulam Hamza / July 30, 2024 Class 10 Practice - Level 1 -Periodic Classification Of Elements Total questions: 40 1. Which of the following elements has the smallest atomic size? Lithium Sodium Potassium Cesium None 2. What is the common property of elements in group 17 of the periodic table? They are all metals They are all metalloids They are all non-metals They are all noble gases None 3. Which of the following elements is a metal? Carbon Oxygen Sodium Chlorine None 4. Which element has an atomic number of 1? Hydrogen Helium Lithium Beryllium None 5. How many electrons does sodium have in its outermost shell? 1 2 3 4 None 6. Which of the following elements has the highest electronegativity? Fluorine Chlorine Bromine Iodine None 7. Which of the following elements is a noble gas? Nitrogen Oxygen Neon Sulphur None 8. Which element is the most reactive metal? Lithium Sodium Potassium Cesium None 9. Which of the following elements is known for being a good conductor of electricity? Sulphur Silicon Copper Bromine None 10. Which element is classified as a metalloid? Boron Oxygen Sodium Chlorine None 11. According to the modern periodic law, the properties of elements are a periodic function of their Atomic size Atomic number Mass number Density None 12. Which of the following groups in the periodic table contains the alkali metals? Group 1 Group 2 Group 17 Group 18 None 13. The horizontal rows in the periodic table are called: Groups Periods Blocks Series None 14. Which element is most likely to form an ionic bond with chlorine? Carbon Hydrogen Sodium Nitrogen None 15. How many valence electrons does oxygen have? 2 4 6 8 None 16. Which element in the second period has the highest ionization energy? Lithium Beryllium Boron Neon None 17. Which of the following elements is a non-metal? Magnesium Calcium Phosphorus Zinc None 18. Which of the following elements has the lowest electronegativity? Fluorine Oxygen Nitrogen Lithium None 19. Which element is in the third period and belongs to the group of noble gases? Helium Neon Argon Krypton None 20. What is the chemical symbol for the element Gold? Au Ag Gd Ga None 21. Which element in group 17 has the highest electronegativity? • Fluorine • Chlorine • Bromine • Iodine None 22. What is the chemical symbol for Iron? Ir Fe In I None 23. What is the chemical symbol for the element Potassium? P Pt K Po None 24. Which of the following elements has the highest atomic radius? Fluorine Chlorine Bromine Iodine None 25. Which of the following elements is a noble gas? Hydrogen Oxygen Nitrogen Argon None 26. The elements in the same group have similar: • Atomic sizes • Mass numbers • Chemical properties • Densities None 27. Which element is more reactive with water? Magnesium Aluminium Sodium Gold None 28. Which of the following elements is a transition metal? Sodium Copper Carbon Chlorine None 29. Which of the following elements is a liquid at room temperature? Mercury Silver Copper Gold None 30. Which of the following elements is known for being a semiconductor? Sulphur Silicon Copper Bromine None 31. Which element in the second period has the smallest atomic radius? Lithium Beryllium Fluorine Neon None 32. Which group in the periodic table contains the noble gases? Group 1 Group 2 Group 17 Group 18 None 33. The vertical columns in the periodic table are called: Groups Periods Blocks Series None 34. Which of the following elements is used in making batteries? Lithium Neon Calcium Zinc None 35. Which of the following elements is an alkali metal? Magnesium Calcium Sodium Zinc None 36. How many protons does an atom of carbon have? 4 6 8 12 None 37. In which block of the periodic table is the element Iron found? s-block p-block d-block f-block None 38. Which of the following elements is a good conductor of heat? Sulphur Silicon Copper Bromine None 39. Which element is most likely to form a covalent bond with hydrogen? Carbon Sodium Magnesium Aluminium None 1 out of 39 Time's up
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