A sample of an element X contains two isotopes `._(8)^(16)X and ._(8)^(18)X`. If the average atomic mass of this sample of the element be 16.2 u, calculate the percentage of the two isotopes in this sample.

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?

(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.

The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes ._(8)^(16)X and ._(8)^(18)X in the sample.

The average atomic mass of sample of an element X is 16.2 u. What are the percentages of isotopes ._(8)^(16)X and ._(8)^(18)X ?

A sample of oxygen atoms contain only ._(8)O^(16) and ._(8)O^(18) isotopes. If the average atomic mass of the sample is 16.8, then identify the options which is/are correct ?

Boron has two isotopes, B-10 and B-11. The average atomic mass of boron is found to be 10.80u. Calculate the percentage of abundance of these isotopes.