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First Order Reaction

7. Two isotop...

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7. Two isotopes of Boron have atomic mass 10 and 11.Calculate percentage abundance of lighter isotope in a sample of Boron having average atomic mass 10.8.

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Q. Boron occurs in nature in the form of two isotopes having atomic mass 10 and 11. Calculate the percentage abundances of two isotopes respectively in a sample having atomic mass 10.80.

Q. Boron has two isotopes B - 10 and B - 11. If the average atomic mass of boron is 10.80 u. What is the percentage of a heavier isotope?

Q. Average atomic weight of boron is

10.10

and boron exists in two isotopic forms

B^{10}

B^{11}

. The percentage abundance of

B^{10}

Q. The percentage of two stable boron isotopes

_{5} B^{11}

_{5} B^{10}

is, given that average atomic mass of boron is 10.81amu.

Q. Atomic mass of boron is 10.81. It has two isotopes with 80% and 20% abundance respectively. The atomic mass of the isotope having 80% abundance is 11.01. The atomic mass of the other isotope is:

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