Chemistry of Group 13 / 14 Elements II (Exercise) Welcome to your Chemistry of Group 13 / 14 Elements II (Exercise) Name Email Address 1. The reactivity of Group 13 elements generally increases as you move down the group due to: Increasing ionization energy Decreasing atomic size Increasing electronegativity Decreasing ionization energy and increasing atomic size 2. Group 13 elements can exhibit Lewis acidity, which means they can: Donate a pair of electrons to form coordinate covalent bonds. Accept a pair of electrons to form coordinate covalent bonds. Donate or accept electrons to form ionic bonds. Donate or accept electrons to form covalent bonds. 3. The inert pair effect is most pronounced in which of the following elements? Boron (B) Aluminum (Al) Gallium (Ga) Indium (In) 4. Which Group 13 element exhibits a mixture of +3 and +1 oxidation states? Boron (B) Aluminum (Al) Gallium (Ga) Thallium (Tl) 5. Aluminum (Al) forms compounds with a variety of elements and readily reacts with: Oxygen Hydrogen Chlorine All of the options 6. Which Group 13 element exhibits the most prominent inert pair effect? Boron (B) Aluminum (Al) Gallium (Ga) Thallium (Tl) 7. Beryllium compounds tend to exhibit more ionic character compared to aluminum compounds primarily due to: Higher charge density of beryllium ion Higher charge density of aluminum ion Lower atomic size of beryllium Lower atomic size of aluminum 8. The formation of aluminum oxide (Al2O3) provides corrosion resistance to aluminum due to: The formation of a protective layer on aluminum's surface. The promotion of oxidation reactions. The prevention of ionization. The formation of an insoluble compound. 9. Which Group 13 element exhibits different forms known as allotropes? Boron (B) Aluminum (Al) Gallium (Ga) Indium (In) 10. Aluminum reacts with a base, such as sodium hydroxide (NaOH), to produce which compound? Sodium tetrahydroxogallate Aluminum hydroxide Sodium tetrahydroxoaluminate Sodium trihydroxoaluminate 11. Which element is unique among the elements in the periodic table due to its ability to form a vast number of compounds? Silicon Germanium Tin Carbon 12. Germanium shares many similarities with which element in terms of its chemical properties and crystal structure? Carbon Silicon Tin Lead 13. Tin is often used as a coating material to prevent corrosion. Which alloy is commonly formed by mixing tin with copper? Brass Bronze Steel Pewter 14. Lead is a dense, soft, and highly malleable metal. Which application of lead involves its use as a radiation shield? Plumbing Batteries Paints Soldering materials 15. The atomic radius generally __________ down the group 14 elements. Increases Decreases Remains constant Varies unpredictably 16. Which element among the group 14 elements is a metalloid? Carbon Silicon Germanium Tin 17. What is the main source of extraction for tin? Dolomite Magnetite Cassiterite Galena 18. What is the appearance of carbon in its purest form, diamond? Transparent, colorless crystal Black, soft, and slippery solid Shiny, grayish solid Lustrous, grayish-white metalloid 19. Which of the following elements in Group 14 has the highest melting point? Carbon Silicon Germanium Tin 20. How is carbon dioxide (CO2) primarily found in the Earth's atmosphere? As a gas emitted by volcanic activity As a result of fossil fuel combustion Released by plants during photosynthesis None of the above 21. Thank you for taking Chemistry of Group 13 / 14 Elements II (Exercise) Time's up
