Which of the following covalent bonds is the least polar? (EN values: H: 2.1; B: 2.0; C: 2.5; N: 3.0; O: 3.5) A) A covalent bond between hydrogen and boron B) A covalent bond between hydrogen and carbon C) A covalent bond between hydr...
(a) Ionic (b) Dispersive (c) Non-polar covalent (d) Polar covalent (e) Hydrogen bond. Which type of bond must be broken for water to vaporize? a) Ionic bonds b) Polar covalent bonds c) hydrogen bonds d) both polar covale...
A. Intermolecular hydrogen bonds increase the melting and boiling points of molecules B. Hydrogen bonds between different molecules increase mutual solubility C. Reduce the density of water D. The above three items 相关知识点: 试题来源: 解析 D 反馈...
such as in water with an oxygen atom and in hydrocarbons with carbon atoms. In the case of water, the covalently bonded hydrogen atoms can form additional intermolecular hydrogen bonds that are weaker than the covalent molecular bonds. These...
商业银行建立关键风险指标开展操作风险监测工作，关键风险指标是代表某一业务领域操作风险变化情况的统计指标，是识别操作风险的重要工具。其中，“监测工作要能够反映操作风险全局状况及变化趋势，揭示诱发操作风险的系统性原因，实现对全行操作风险状况的预警”属于关键风险指标监测原则的( )原则。
has two different types of bonding between its constituent atoms. The bonds between the hydrogen and carbon atoms are nonpolar covalent bonds. The hydrogen-oxygen and carbon-oxygen bonds are polar covalent bonds. In turn, these polar covalent bonds can lead to hydrogen bonds forming between ethanol...
Liquid water's high boiling point is due to the high number of hydrogen bonds each molecule can have relative to its low molecular mass. Water is unique because its oxygen atom has two lone pairs and two hydrogen atoms, meaning that the total number of bonds of a water molecule is four....
ICSE-HYDROGEN-VERY SHORT ANSWER TYPE QUESTIONS What is the shape of a water molecule ? 02:24 How many hydrogen bonds can be formed by a water molecule? 00:54 What type of forces are responsible for the aggregation of water molec... 02:46 What is the action of water on litmus ? 02...
Texas Carbon While carbon typically has an oxidation state of +4 or -4, there are instances when a valence other than 4 occurs. An example is "Texas carbon," which forms 5 bonds, usually with hydrogen.
What type of bond keeps each individual DNA strand together? (a) Covalent bonds. (b) Ionic bonds. (c) Hydrogen bonds. (d) Electrostatic bonds. What are the bonds that hold together the DNA backbone called? What type of bonds hold the nitrogen bases together in the DNA molecule?