Effects of Bonding & Structure on Physical Properties Different types of structure and bonding have different effects on the physical properties of substances such as their melting and b...
Metallic Lattice Structures Metals form giant metallic lattices in which the metal ions are surrounded by a ‘sea’ of delocalised electrons The metal ions are often packed in hexagonal layers...
Covalent Lattice Structures Covalent lattices Covalent bonds are bonds between nonmetals in which electrons are shared between the atoms Covalent compounds can be arranged in simple molecula...
Ionic Lattice Structures Most ionic, metallic and covalent solids are crystalline lattices The ions, atoms or molecules are arranged in a regular and repeating arrangement Giant ionic lattic...
Metallic Bonding: Definition Metal atoms are tightly packed together in lattice structures When the metal atoms are in lattice structures, the electrons in their outer shells are free to mov...
Representing Dot & Cross Diagrams Dot and cross diagrams are diagrams that show the arrangement of the outer-shell electrons in an ionic or covalent compound or element The electrons are...
Dative Covalent Bonding In simple covalent bonds, the two atoms involved share electrons Some molecules have a lone pair of electrons that can be donated to form a bond with an electron-defi...
这两年，美本在华招生几乎年年“收紧”，英国则热度暴涨、竞争越发激烈。同时，国内家长们对于留学的热情却是年年拔高。 除了英美这两个大热门选手外，世界上那么多国家，还有哪些留学的优质目的地？ 我们曾分享过...
Covalent Bonding Covalent bonding occurs between two non-metals A covalent bond involves the electrostatic attraction between nuclei of two atoms and the bonding electrons of their outer shells No ...
