1.

The number of electrons in an element with atomic number X and atomic mass number Y will be_____​

Answer»

Answer:The number of electrons in an ELEMENT with atomic number X and mass number Y will be X. It will be EQUAL to the number of PROTONS. The number of NEUTRONS will be Y−X.

Number of electrons = number of protons = atomic number.

Number of neutrons = Mass number − atomic number.



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