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Boron has two stable isotopes, ""^(10)B(...

Boron has two stable isotopes, `""^(10)B(19%)` and `""^(11)B(81%)`. The atomic mass that should appear for boron in the periodic table is

A

10.8

B

10.2

C

11.2

D

10

Text Solution

Verified by Experts

The correct Answer is:
A
Atomic mass ` = (10 xx 19+81 xx 11)/(100) = (190+891)/(100) = (1081)/(100)`
` = 10.81`
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