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a halogen atom (F, Cl, Br or I) reacts by addition reaction with alkenes
a substance that can accept a proton in an acid-base reaction.
a hydrocarbon with single bonds between carbon atoms and at least one hydrogen replaced by a...
100 000 N per square metre. A pressure of 1 N · m2 is called one pascal (Pa).
the radius of an ion of an atom, from the nucleus to the outermost.
electrons that have become removed from the atom and form a âseaâ or region to which the...