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Boron occur in nature in to …

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Boron occur in nature in to form of two isotope having atomic mass 10 and 11 what are the persentage abundance of two isotope in a simple of born having avaga at mass 10.8

Posted by Zaarakhan Khan 9 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Aman Acharya 9 months ago

The Formula Of Average Atomic mass = Atomic Mass 1 × % Abudance + Atomic mass 2 × % abundance/ 100 10.8 = 11(x) + 10( 100-x ) / 100 1080 = 11x + 1000 -- 10x 1080 - 1000 = x x = 80 So boron having Atomic mass 11 have 80% abundance in nature and 10 has 20%

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