Question

1. Another name for SiO, is a. Silicon b. Silica c. Silica gel CO, and SiO, look similar but have very different chemical and physical properties. This is due to a. The Si-O bond is stronger than the C-O bond b. The C-O bond is ionic c. CO2 is a gas while SiO, is a liquid The Si compound used as a drying agent is a. Silicon dioxide b. Silica gel c. Silicon 3. Which statement about Sn is NOT true? a. Sn has two allotropic forms b. Sn is a nonmetal c. Sn oxide is amphoteric The compound tetraethyl lead, Pb(C2Hs), is o a. Highly toxic b. A major pollutant c. A food additive All Group 14 elements exist as allotropes EXCEPTotsho a. Pb b. Sn c. C Compared to hydrocarbons, silanes are a. More reactive b. Less reactive c. Just as reactive Which statement is incorrect? a CO is a strong reducing agent b. CO is an excellent ligand with metals in low oxidation states c. CO reacts with OH-to form CH,COO

Answer 1

Silica. Si O₂ is also known as ansiner: D 2. Si-O₂ is therefore Answer: @ solid whereas si-obond is co, is gas; stronger than l-o. les 3. Si compound used for drying! (6 Silica gel