Which of the following statements best distinguishes a polar covalent bond from a nonpolar covalent bond?

Question

BlackTom AI · Accepted Answer

Question restatement: The prompt asks how to distinguish a polar covalent bond from a nonpolar covalent bond.
Option 1: 'In a polar covalent bond, electrons are shared unequally due to differences in electronegativity, while in a nonpolar covalent bond, electrons are shared equally.' This captures the core distinction: polarity arises when atoms with different electronegativities share electrons unevenly, creating partial charges, whereas nonpolar bonds feature a balanced sharing of electrons.
Option 2: 'Polar covalent bonds involve the equal sharing of electrons, while nonpolar covalent bonds involve unequal sharing.' This is incorrect because equal sharing defines nonpolar bonds, not polar ones; it reverses the fundamental concept of electronegativity differences.
Option 3: 'Polar covalent bonds form only between identical atoms, while nonpolar covalent bonds form between different atoms.' This statement is false: identical atoms typically form nonpolar covalent bonds due to identical electronegativities, while polar covalent bonds often form between different atoms with differing electronegativities.
Option 4: 'Nonpolar covalent bonds are always weaker than polar covalent bonds.' This is misleading: bond strength depends on many factors (bond type, bond order, atoms involved) and polarity alone does not determine bond strength; some nonpolar bonds can be quite strong, and some polar bonds can be relatively weaker depending on the context.
In summary, the first option correctly aligns with the standard definition: polarity stems from unequal electron sharing caused by electronegativity differences, whereas nonpolar bonds involve equal sharing. The other options misstate how electron distribution relates to polarity and bond strength, leading to conceptual inaccuracies.

Which of the following statements best distinguishes a polar covalent bond from a nonpolar covalent bond?

查看解析

登录即可查看完整答案

类似问题

A non-polar covalent bond is best described as:

When two atoms share a pair of electrons, they

When two atoms share a pair of electrons, they

Si has an atomic number of 14. This means it has 4 electrons in its valence shell (the 3rd shell). How many other Si atoms does each Si atom bond with to form solid Si?

Si has an atomic number of 14. This means it has 4 electrons in its valence shell (the 3rd shell). How many other Si atoms does each Si atom bond with to form solid Si?

At ordinary temperatures and atmospheric pressure, carbon can exist in a solid crystalline form known as diamond.Carbon atoms in diamond are held together mainly by

Nitrogen trichloride is a covalent compound

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