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My best tip for exam preparation is to work your way through the course specification. This gives you the best understanding of exactly what you need to know for the exam, for example all the definitions ...
NaCl is an example of a covalent structure, where electrons are shared between the atoms in covalent bonds. Graphite has a giant covalent structure with the covalently bonded carbon atoms arranged in laye...
Non-molecular solids are of the type of metallic and ionic solids. They are held together by the strong electrostatic interactions of polar particles like ions and electrons. For example in metals the str...
Sodium is on group 1 and has 1 election in its outer shell. Chloride is in group 7 and has 7 electrons in its outer shell.Sodium looses 1 electron and chlorine gains 1 electron giving both atoms a full ou...
As you descend group 2, more electrons are present in the atom. These electrons fill subshells at a greater energy level. There is a greater distance between the outer shell electron and the nucleus, as w...
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