Atomic weight of an element is compared with which of the following to get the atomic weight of that element?
A. Oxygen
B. Carbon
C. Hydrogen
D. Nitrogen
Answers
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Answer: (B) Carbon
Explanation:
1 Atomic mass unit is defined as (1/12)th mass of a ¹²C isotope. Thus atomic mass of an element is relative and carbon-12 atom mass is taken as the standard for comparing.
itsshiwanshu:
i also answered the same but RRB answer is Hydrogen.
The answer is carbon. This is true because all elements in the periodic table have their mass relative to Carbon-12 and also due to % abundance. If we change the standard, all the masses will have to change!!
Correction: % abundance to give average atomic mass
yeah i agree wid u. may be the answer which is given by RRB is wrong. Btw thanks alot for your kind attention to my question.
Glad to help! Happy asking!
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