draw the lewis representation Bf3
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Postulates of Dalton's atomic theory:
=>All matter consists of indivisible particles called atoms.
=>Atoms of the same elements are similar in shape and mass but differ from the atoms of other elements.
=>Atoms cannot be created or destroyed.
=>Atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form compound atoms.
=>The atom is the smallest unit of matter that can take part in a chemical reaction
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