Question

Isotopes : definition

Answer 1

Answer:

Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.

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Answer 2

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what is isotope?

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$\huge\bf{\underline\orange{Isotopes}}$

➡️ Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.

Property:-

➡️ 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.

Isotopes Examples:-

➡️ Carbon-14 => A naturally occurring radioactive isotope of carbon having six protons and eight neutrons in the nucleus.

➡️ Iodine-131 => It is an isotope because it contains a different number of neutrons from the element iodine.

➡️ All elements have isotopes. There are two main types of isotopes: stable and unstable (radioactive). There are 254 known stable isotopes. All artificial isotopes are unstable and therefore radioactive.