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Each row on the periodic table represents a new energy level/electron shell. So as you go down the group there are more energy levels, increasing the atomic radius. The first electron to react will be ...

Nitrogen has 5 valence electrons in its outer shell. Each Hydrogen has 1 valence electron in its outer shell, so the 3 Hydrogens donate 3 electrons in total. This gives 8 valence electrons in total. We...

A disproportionation reaction is when an element is both oxidised and reduced in the same reaction. You check this by looking at the oxidation state of the element at the begining of the reaction and t...

Isomers are molecules which have the same molceular formula but have a different arrangement of atoms in space. This does not include when molecules have been rotated as their arrangment of atoms is st...

Benzene
With a formula of C₆H₆, the molecule has a cyclic structure due to it's 6 carbon atoms joined in a ring. It is symmetrically planar (flat) with it's 6 h...