(i) Mass no. of 3 isotopes of an element are 10 , 12 and 14. Their % abundance is 80 , 15 and 5 units. what is the atomic weight of that element ?
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atomic weight
=[80/100 × 10 ] + [15/100 × 12] + [ 5/100 × 14]
= 8+1.8+ 0.2
=10
=[80/100 × 10 ] + [15/100 × 12] + [ 5/100 × 14]
= 8+1.8+ 0.2
=10
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