Question

What are isotopes? Pls tell me I need an answer!

Answer 1

Isotopes are those elements which have same no.of protons but different no.of neutrons in their nucleus.
Ex. Hydrogen, chlorine.

Answer 2

HEYA MATE, HERE IS UR ANSWER ______________________

Isotopes are the atoms of the same element which have same atomic number but different mass numbers.

The extra mass is gained because of more neutrons .

For example, For Carbon we have 2 isotopes---

Carbon -12
Carbon -14

The atomic number of both the atoms is same ie 6 but the mass number is different -12and 14.

In both these

Carbon -12 Has 6 protons and 6 neutrons.

Which gives

mass=6+6=12u

Carbon-14has 6 protons and 8 neutrons

Mass =6+8=14u

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