(i) Which element is used as a standard for atomic mass scale? (ii) W

1.	(i) Which element is used as a standard for atomic mass scale? (ii) What is the value of mass of this reference atom?
Answer» i. In 1961, for a universally accepted atomic mass unit, carbon-12 isotope was chosen as the standard reference for measuring atomic masses. ii. One atomic mass unit is a mass unit equal to exactly 1/12^th the mass of one atom of carbon-12.

(i) Which element is used as a standard for atomic mass scale? (ii) What is the value of mass of this reference atom?

Answer»

i. In 1961, for a universally accepted atomic mass unit, carbon-12 isotope was chosen as the standard reference for measuring atomic masses.

ii. One atomic mass unit is a mass unit equal to exactly 1/12^th the mass of one atom of carbon-12.