Question

Name the atoms of a substance having the same atomic number, but different mass numbers. Give one example of such a substance. How do the structures of such atoms differ?

Answer 1

1. Isotopes: Atoms of the same element having same atomic number but different mass numbers.
2. For example, carbon-12 and carbon-14 have the same atomic numbers but different mass numbers.
3. In the structure of carbon-12, there are 6 neutrons in their nucleus, and in the structure of carbon-14, there are 8 neutrons in their nucleus.