(-3/7)2*(7/3)12/-4 solve the expression
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Answer:
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.
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Step-by-step explanation:
=(-6/7)*(7/3)-3
=(-6/7)*(-7)
=6
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