UC知道化学的英文问题！
来源：百度知道 编辑：UC知道 时间：2024/06/08 01:17:40
1.How is it possible to predict if a bond is ionic or covalent? What types of atoms generally form ionic or covalent bonds? How can electronegativities be used to determine the type of bond? (8 points)
2.Draw Lewis dot structures of the diatomic molecules 02 and N2. How many valence electrons does each atom have, and how does that affect the type of bond formed in each molecule? Why do nitrogen molecules have a bond order of three, whereas oxygen molecules have a bond order of two? (12 points)
3.What determines the electron-group geometry of a molecule? What determines the molecular geometry of a molecule? Why can-electron group geometry differ from molecular geometry? Use a Lewis dot diagram of any molecule to help in your explanation. (10 points)
4.What is the oxidation state of Mg in MgO? How do you know? (6 points)
5.Differentiate between the names of CCl4 and C4H8. What is used to describe the number of each type of atom in each mole
2.Draw Lewis dot structures of the diatomic molecules 02 and N2. How many valence electrons does each atom have, and how does that affect the type of bond formed in each molecule? Why do nitrogen molecules have a bond order of three, whereas oxygen molecules have a bond order of two? (12 points)
3.What determines the electron-group geometry of a molecule? What determines the molecular geometry of a molecule? Why can-electron group geometry differ from molecular geometry? Use a Lewis dot diagram of any molecule to help in your explanation. (10 points)
4.What is the oxidation state of Mg in MgO? How do you know? (6 points)
5.Differentiate between the names of CCl4 and C4H8. What is used to describe the number of each type of atom in each mole
有些我google了下
1、看元素的电负性之差是否大于1.7，大于为离子键
准确点是electronegativity between 0.5 and 1.8, it would be a typical covalent bond
suppose a bond between two elements. If the difference in electronegativity between the two elements is less than 1.7 the bond will be mostly covalent. If the difference in electronegativity is more than 1.7 the bond will be mostly ionic. If it is 1.7 the bond will be half covalent and half ionic.
Types就是金非离，非非共。。典型金属和典型非金属的化合物为离子键，两性金属与非金属间视具体元素而定，非金属间为共价键。 Ionic bonds are between metals and non-metals. Covalent bonds are between non-metals and non-me