How is Carbon-12 and Carbon-13 different? What’s is the name that describes these two atoms?

Carbon 12 and 13 are carbon isotopes, meaning that they have additional neutrons:

Carbon 12 has exactly 6 protons and 6 neutrons ( hence the 12 )

Carbon 13 has 6 protons and 7 neutrons ( hence the 13 )

They differ in the number of neutrons in the nucleus.

Names:

carbon-13, C-13

carbon-12, C-12