What are isotopes?

What is isotopic effect?

Write three isotopes of hydrogen.

What are radio-isotopes? What are their applications?

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes ?

The average atomic mass of a sample of an element X is 16.2 u, what are the percentages of isotopes "_8^16X and "_8^18X in the sample?

Indium (atomic mass =114.82 ) has two naturally occurring isotopes, the predominant one from has isotopic mass 114.9041 and abundance of 95.72% . What is the mass for the other isotope ?

Write two isotopes of carbon