Which of the following correctly identifies they type of bonding that occurs within each of the following substancesi. KBrii. NH3iii. Feiv. SiO2

Question

BlackTom AI · Accepted Answer

To tackle the question, we first identify the bonding types for each substance listed. For i. KBrii (likely KBr), the bond is ionic because a metal (K) transfers electrons to a nonmetal (Br), forming ions held together by electrostatic attraction. For ii. NH3, the bonds are covalent since nitrogen shares electrons with hydrogen to complete its octet, resulting in a molecular covalent compound. For iii. Fe, the bonding is metallic, characterized by a lattice of cations in a "sea" of delocalized electrons, which is typical of elemental metals. For iv. SiO2 (silicon dioxide), the bonding is covalent in a network (macromolecular) structure where each silicon is tetrahedrally bonded to oxygen, creating a strong, extended covalent framework.

Now evaluate each answer option:

Option a: 'i. ionic, ii. metallic, iii. covalent, iv. covalent' asserts that ii. NH3 is metallic bonding, which is incorrect because NH3 is a molecular compound with covalent bonds, not a metal lattice. It also assigns iii. Fe as covalent instead of metallic, which contradicts the well-established metallic bonding in iron. Overall, this option mislabels two substances.

Option b: 'i. ionic, ii. covalent, iii. metallic, iv. covalent' aligns with the correct identifications discussed above: i ionic for KBr, ii covalent for NH3, iii metallic for Fe, and iv covalent for SiO2 network. This option matches the standard chemistry classifications for these substances.

Option c: 'i. metallic, ii. covalent, iii. covalent, iv. ionic' incorrectly labels i. as metallic (it should be ionic), and iv. as ionic (SiO2 is covalent network), while also misclassifying iii. Fe as covalent rather than metallic. Multiple errors here.

Option d: 'i. covalent, ii ionic, iii. metallic, iv. covalent' wrongly assigns i. as covalent (KBr is not covalent) and ii. as ionic (NH3 is not ionic), which makes this option fundamentally incorrect for the first two substances, with the remaining parts also inconsistent.

In summary, the only option that consistently matches the correct bonding types for all four substances is option b, since it correctly describes i as ionic, ii as covalent, iii as metallic, and iv as covalent.

MCD1170 Introductory Chemistry - Trimester 1 - 2025

Which of the following correctly identifies they type of bonding that occurs within each of the following substancesi. KBrii. NH3iii. Feiv. SiO2

查看解析

登录即可查看完整答案

类似问题

Between carbon monoxide, CO, and carbon dioxide, CO2, which statement best describe the carbon-oxygen bond?

Question at position 57 Which of the following would be classified as a strong bond?hydrogen bondnone are strongcovalent bondvan der Waals interactions

Fill in the two blanks for this sentence to make it a true statement: As the number of bonds between two atoms decreases, the bond length and the bond strength . 12A

Part C. Changing the model used to calculate the bond length of I2 [ Select ] will not will change its value. Part D & E. The total electron count for I3- is [ Select ] 17 23 16 22 24 8 . An atom of iodine (I) can be hypervalent, in other words it can have [ Select ] 6 8 more than 8 no 2 electrons.

Which one of the following compounds is considered to be a molecular compound? BlackTom题目解析

The length of covalent and non-covalent bonds is important to consider because

The bonding in graphite is best described as

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单