Question

defire isotopes .
and neutrons
How
+
present
electrons ,proton Mg2– and cu2±
​

Answer 1

Answer:

The atomic number of the element equals the number of protons. Calculating the number of neutrons then becomes atomic mass of the isotope minus the atomic number of the element equals the number of neutrons. For uranium-235, atomic number 92, the number of neutrons is 235-92=143, or 143 neutrons.

Answer 2

Explanation:

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