Mass of a proton is considered to be one mass unit. Thus, the mass of proton is taken as 1u.
Thus, the answer is (1) 1u
The mass of a proton is approximately 1 atomic mass unit (u). Among the options provided, the correct one is (1) 1 u. The mass of a **proton **is a known constant and does not change. ;
The mass of a proton is approximately 1 atomic mass unit (u), making option (1) 1 u the correct choice. This unit is widely used in chemistry and physics to express atomic masses. A proton's mass is very close to 1 u, specifically around 1.0073 u.
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