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

Question

BlackTom AI · Accepted Answer

Consider the role of bond lengths in molecular structure and how both covalent and non-covalent interactions contribute to the overall shape of a molecule.
Option 1: 'covalent bonds such as those found in the nitrogenous bases are always constant' — This is not accurate because bond lengths can vary with environment, rotation, and chemical context, and insisting they are 'always constant' overlooks these nuances. Covalent bonds have characteristic lengths, but they are not fixed in all situations, so this statement misrepresents how bond lengths influence structure.
Option 2: 'non-covalent bonds are critical for molecules to have a given shape' — While true that non-covalent interactions help define and stabilize three-dimensional shapes, this option ignores the role of covalent bonds in locking in core frameworks. It isolates non-covalent bonds as the sole determinant of shape, which is incomplete.
Option 3: 'both covalent and non-covalent bonds restrict or allow for structure' — This captures the fuller picture: covalent bonds set up the primary scaffold and long-range connectivity, while non-covalent bonds fine-tune geometry, enable folding, and permit dynamic rearrangements. Bond lengths and strengths in both types influence how a molecule can adopt and maintain specific structures.
Option 4: 'Van der Walls are a covalent type of bonds critical for DNA strcuture stability' — Van der Waals interactions (the correct term) are non-covalent, not covalent, and DNA stability relies on a combination of hydrogen bonding, base stacking (non-covalent), and covalent backbone linkages. Labeling them as covalent misstates their nature and their role in DNA structure.
In summary, the most accurate statement is that both covalent and non-covalent bonds contribute to whether and how a molecule can adopt and maintain its structure, whereas the other options contain factual inaccuracies or incomplete views about bond types and their roles.

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

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

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

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