Question

What is isotopes Explain brief?

Answer 1

Those elements having the same atomic number,
but have different mass numbers, (they differ in the mass number, because they differ in the number of neutrons),
were termed as isotopes.
For eg,
Cl.
It's isotopes are,
Cl35, and Cl37.
They differ in the atomic weights, but their atomic numbers are the same.

Thank you.
Hope this will help you.

Answer 2

$\huge\bf{\underline\green{Question}}$

what is isotope?

$\huge\bf{\underline\pink{Answer}}$

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

➡️ 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.