Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

'Atomic Mass Unit (amu)' used to express mass of atoms is replaced by 'Unified Mass (u)' ,but still the term 'amu' is used instead of 'u'.Why?

'Atomic Mass Unit (amu)' used to express mass of atoms is replaced by 'Unified Mass (u)' ,but still the term 'amu' is used instead of 'u'.Why?

Grade:12

1 Answers

deepak kumar singh AskiitiansExpert-IITM
16 Points
11 years ago

dear Jay Patel

the unified atomic mass unit was adopted by the IUPAC in 1961. Hence, before 1961 chemists used the symbol amu for their respective atomic mass units. One still sometimes finds this usage in the scientific literature today. However, the accepted standard is now the unified atomic mass unit (symbol u), with: 1 u = 1.000 043 amu . Since 1961, by definition the unified atomic mass unit is equal to one-twelfth of the mass of a carbon-12 atom.

since 1u is almost equal to the 1amu, one still sometime use this convention, and as you know its take time to change the old tradition.

Please feel free to post as many doubts on our discussion forum as you can. We are all IITians and here to help you in your IIT JEE preparation.

Win exciting gifts by answering the questions on Discussion Forum..

ALL THE BEST

Regards

Deepak kumar singh

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free