Question

How are the isotopes of an element alike and how are they different?

Answer 1

Answer:

Different isotopes of the same element have the same atomic number. They have the same number of protons. The atomic number is decided by the number of protons. Isotopes have different mass numbers, though, because they have different numbers of neutrons.

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Answer 2

Answer:

Isotopes are atoms of an equal element which have a different quantity of neutrons but an equal number of protons and electrons. The difference in the number of neutrons between different isotopes of an element means that different isotopes have different masses.

Explanation:

• Isotopes are variants of a particular chemical element that differ in the number of neutrons, although all isotopes of a given element have an equal number of protons in each atom.
• Isotopes have the same number of protons but the different number of neutrons.
• Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom.