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The isotopes of an element all have the same __(atomic, mass) __number, but they have different __(atomic,mass)__numbers.

Respuesta :

The isotopes of an element all have the same __(atomic, mass) __number, but they have different __(atomic,mass)__numbers.

Explanation:

The isotopes of an element all have the same __atomic  number  __, but they have different __mass __numbers.

The isotopes have same atomic number that is :

  • Same number of electrons
  • Same number of protons
  • same electronic configuration
  • same valence electrons
  • same valency
  • same symbol

The isotopes have different mass number that is :

They differ in number of neutrons .

For example : Isotopes of hydrogen are : H₁¹ , H₁² , H₁³

                       isotopes of Oxygen is : O¹⁶ , O¹⁷, O¹⁸

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