Question

isotopes of an element have nuclei with​

Answer 1

Answer:

Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.

Answer 2

Answer:

Isotopes of an element have nuclei with​ the same number of protons.

Explanation:

• One of two or more forms of the same chemical element is an isotope.
• Different isotopes of an element have the same number of protons in their nuclei, which gives them the same atomic number. However, they have different numbers of neutrons, which gives each isotope a unique atomic weight.
• For instance, Hydrogen exists in three isotopes: protium, deuterium, and tritium. These all have the same number of protons, however, their neutron numbers vary. The neutron number in protium is zero; in deuterium, it is one; and in tritium, it is two.
• Similarly, the isotopes of carbon are carbon-12, carbon-13, and carbon-14. Carbon-12 has six neutrons, carbon-13 contains seven neutrons, and carbon-14 contains eight neutrons.
• The physical characteristics of isotopes of the same element differ (melting points, boiling points), and the nuclei of some isotopes are unstable and radioactive.

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