Statement 1 : The average mass of one Mg atom is 24.305 amu, which is not the actual mass of one Mg atom.Statement 2 : Three isotopes, 24 Mg, 25 Mg and 26 Mg, of Mg are found in nature.
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a
Both Statement 1 and Statement 2 are true
b
Statement 1 is true and Statement 2 is false
c
Statement 1 is false and Statement 2 is true.
d
Both Statement 1 and Statement 2 are false.
answer is A.
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Detailed Solution
Average atomic mass = %abundance of one isotope(its mass)+%abundance of second isotope(its mass)+....Sum of the percentages