Define isotope and give two examples.

Define isotopes and give an example

Define nutrients and give two examples.

what do you mean by isotopes. give two example.

Answer the following question : Define solvent. Give two examples.

Define sublimation. Give two examples.

Define projectile. Give two examples.

(a) What are radioactive isotopes ? Give two examples of radioactive isotopes (b) Give any two uses of ratioactive isotopes (c) An element Z contains two naturally occuring isotopes ._(17)^(35) Z and ._(17)^(37)Z . If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.