Boron naturally occurs as a mixture of boron-10 and boron-11 isotopes. The percentage abundance of B-10 is 20 and that of B-11 is 80. Calculate the average atomic mass of boron using the given data.

16 u

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10.8 u

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11 u

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13 u

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Solution

The correct option is B 10.8 u
.

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Q. Average atomic weight of boron is

10.10

and boron exists in two isotopic forms

B^{10}

and

B^{11}

. The percentage abundance of

B^{10}

is?

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Boron naturally occurs as a mixture of boron-10 and boron-11 isotopes. The percentage abundance of B-10 is 20 and that of B-11 is 80. Calculate the average atomic mass of boron using the given data.

The correct option is B 10.8 u.

The correct option is B 10.8 u
.