Chemistry of Group 15 Elements I Welcome to your Chemistry of Group 15 Elements I today May 20, 2024 Name Email 1. Which element is the lightest in Group 15 and the most abundant gas in the Earth's atmosphere? Nitrogen Phosphorus Arsenic Antimony 2. Which element can exist in several allotropes, including white phosphorus and red phosphorus? Nitrogen Phosphorus Arsenic Antimony 3. Which element exhibits properties of both metals and nonmetals and is highly toxic? Nitrogen Phosphorus Arsenic Antimony 4. Which element is often found in association with other metals such as lead and silver and is used in the production of flame-retardant materials? Nitrogen Phosphorus Arsenic Antimony 5. How many valence electrons are present in Group 15 elements? 2 3 4 5 6. What is the tendency of Group 15 elements in chemical reactions? Gain three electrons Lose three electrons Share three electrons Gain or lose three electrons 7. Which element in Group 15 exhibits an increasing trend in ionization energy? Nitrogen Phosphorus Arsenic Bismuth 8. What is the primary factor contributing to the decreasing trend in atomic radius in Group 15 elements? Increased nuclear charge Decreased electron shielding Increased number of energy levels Increased number of valence electrons 9. Which element in Group 15 has the highest electronegativity? Nitrogen Phosphorus Arsenic Bismuth 10. Which element in Group 15 exhibits properties of both metals and nonmetals? Nitrogen (N) Phosphorus (P) Arsenic (As) Bismuth (Bi) 11. Which Group 15 element is commonly used in fertilizers, detergents, and various industrial applications? . Nitrogen (N) Phosphorus (P) Arsenic (As) Bismuth (Bi) 12. Which Group 15 element possesses high diamagnetic properties, repelling magnetic fields? Nitrogen (N) Phosphorus (P) Arsenic (As) Bismuth (Bi) 13. Which of the following elements is primarily extracted from the mineral stibnite? Nitrogen (N) Phosphorus (P) Arsenic (As) Antimony (Sb) 14. Phosphorus is commonly found in the Earth's crust in the form of: Phosphate rock deposits Arsenopyrite Stibnite Lead ores 15. The extraction of nitrogen involves which of the following processes? Fractional distillation of liquid air Treatment of phosphate rock with sulfuric acid Smelting of metal ores Heating of stibnite ore 16. What is the primary oxidation state of phosphorus in PH₃ (Phosphine)? -3 -2 -1 +1 17. Which of the following elements exhibits phosphorescence and is highly reactive to air? Nitrogen (N) Phosphorus (P) Arsenic (As) Antimony (Sb) 18. The reaction of antimony with limited oxygen forms which compound? Antimony monoxide (SbO) Antimony pentoxide (As₂O₅) Antimony tetraoxide(Sb3O4) Antimony trioxide (Sb₂O₃) 19. Which oxidation state is exhibited by nitrogen in the compound N₂H₄? -3 +1 +3 +5 20. Which allotrope of phosphorus is used in safety matches? White phosphorus Red phosphorus Black phosphorus Phosphorus pentoxide Thank you for taking Chemistry of Group 15 Elements IChemistry of Group 15 Elements I today, May 20, 2024 Time's up
