Which of these statements is/are correct of a proton? i. The mass of a proton is one-twelfth the molar mass of carbon ii. The mass of a proton is 1840 times the mass of an electron iii. The mass of a proton is \(1.0008 g\).
A. ii only B. i, ii and iii C. i only D. i and ii only
Correct Answer: A
Explanation
The mass of a proton is one - twelfth the mass of one atom of carbon \(-12\), so (i) is wrong The mass of a proton is 1840 times the mass of an electron, so (ii) is right. The relative mass of a proton is \(1.008\) amu not \(1.008 g\), so (iii) is wrong
