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An atom X has 5 energy levels of electrons outside its nucleus and 74 neutrons inside its nucleus. Identify this atom
a. I
b. Cd
c. Ca
d. Fr
e. P

Respuesta :

Answer:

Iodine

Explanation:

Iodine is located in the 5th period, meaning that it will have 5 energy levels.

Additionally, Iodine has an atomic mass of about 127 atomic mass units, and since it has 53 protons, it will have 74 neutrons.

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Explanation:

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