two isotopes of an element are:-
X- atomic no 11, Mass no 23
Y- atomic na 1 Mass no 24
if a sample of this element contains 65% of
isotope x and 35% of isotope y calculate
fractional atomic mass of this element.
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Answer:
23.35
Explanation:
av atomic mass = 23×65+24×35 / 100
= 1495+840/100
= 2335/100
= 23.35
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