basic chemistryyy

39. The answer is (ii). WHY?
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Keshav
Keshav9mo ago
The first has nothing to do with the second statement (its just a fact) For these questions, Asessrtion because/as Reason statement. if it makes sense, then yk know the answer.\
Spooderman
SpoodermanOP9mo ago
But vaha pr likha hai "as choosen as a standard" Iska Matlab kya hua?
KaiZên
KaiZên9mo ago
unit of atomic mass is amu, which is given wrt the Carbon 12 isotope. This is what it means by standard, as it is used as convention throughout the world.
Gaurav
Gaurav9mo ago
Phir assertion ka real reason Kya hoga ? @KaiZên @Keshav
KaiZên
KaiZên9mo ago
Tbh i dont understand the last paragraph as well... any insights on the same please?
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Keshav
Keshav9mo ago
That's not the reason it was picked up. 1/12th of C-12 atom represents the mass of 1 proton/neutron (they have about the same mass). And each atom's mass can be expressed as the sum of nucleons * amu.(roughly, for example Cl has a mass of 35.5 amu) It's rather a convention. Another reason is - no other nuclide has an identical whole-number mass on this scale except carbon-12. @Gaurav @Spooderman
Gaurav
Gaurav9mo ago
Okay thanks a ton @KaiZên @Keshav 🙏
Spooderman
SpoodermanOP9mo ago
+solved @Keshav
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