第十一章单元测试
- Ionic bonds are formed by sharing pairs of electrons. （ ）
- Octet is usually an inert gas structure with eight outer electrons.（ ）
- A covalent bond is a chemical bond in which two or more electrons are shared by two atoms.（ ）
- Polar covalent bond or polar bond is a covalent bond with greater electron density around one of the two atoms（ ）
- All the valence electrons of the atoms in a Lewis structure must appear in the structure.（ ）
A:错 B:对
答案:错
A:对 B:错
A:对 B:错
A:对 B:错
A:对 B:错
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