Dot and Cross Diagrams | GCSE Chemistry Practice
Dot and cross diagrams show how electrons are transferred or shared in chemical bonds.
Draw a dot and cross diagram for methane ($CH_4$).
What is Dot and Cross Diagrams | Practice?
"A visual representation of the sharing or transfer of electrons between atoms in a chemical bond."
What is the typical size range of a nanoparticle?
Metals have high melting points because...
As the side of a cube decreases tenfold, what happens to its surface area to volume ratio?
How many covalent bonds does each carbon atom form in diamond?
Sharing Electrons
Ionic: Electrons are transferred; brackets and charges are used.
Covalent: Electrons are shared in the overlap of shells.
Only outer shell electrons are usually shown.
The "dot" represents an electron from one atom, the "cross" from another.
Drawing Rule: For covalent bonds, ensure every atom (except Hydrogen) has 8 electrons in its outer shell.
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