Home
Class 9
CHEMISTRY
When was C^12 isotope universally accept...

When was `C^12` isotope universally accepted as standard reference for expressed atomic masses ?

Promotional Banner

Topper's Solved these Questions

  • IS MATTER AROUND US PURE

    MBD|Exercise Example|223 Videos

Similar Questions

Explore conceptually related problems

Which isotope of carbon is used as a standard reference to express atomic masses ?

Which unit is used now-a-days to express atomic masses ?

Express unified atomic mass unit in kg.

What were the units used for expressing atomic masses of elements initially ?

Carbon occurs in nature in the form of two isotopes with atomic mass 12 and 13 respectively. If average atomic mass of carbon is 12.011 u , what is the % abundance of the two isotopes ?

Nitrogen occurs in nature in the form of two isotopes with atomic mass 14 and 15 respectively. If average atomic mass of nitrogen is 14.0067, what is the % abundance of the two isotopes ?

Define electron volt and atomic mass unit and find relation between them. Express atomic mass unit in MeV (or eV).

Would you place the two isotopes of chlorine CI-35 and CI-37 because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer

The isotope _8 O^(16) has 8 proton ,8 neutrons and 8 electons,while _4Be^8 has 4 protons ,4 neutrons nad 4 electrons.Yet hte ratio fo theirr atomic masses is not exactly 2..Why?