Home
Class 12
PHYSICS
The three stable isotopes of neon .10Ne^...

The three stable isotopes of neon `._10Ne^(20), ._10Ne^(21)` and `._10Ne^(22)` have respective aboundances of `90.51%,0.27%` and `9.22%`. The atomic masses of the three isotopes are `19.99u, 20.99u` and `21.99u` respectively. Obtain the average atomic mass of neon.

Text Solution

Verified by Experts

The masses of three isotope are 19.99u, 20.99u, 21.99u
Their relative abundance are 90.51%, 0.27% and 9.22%
`:.` Average atomic mass of Neon is
`m=(90.51xx19.99+0.27xx20.99+9.22xx21.99)/((90.51+0.27+9.22))=(1809.29+5.67+202.75)/100=2017.7/100=20.17u`
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND NUCLEI

    PRADEEP|Exercise (II) very short answer 16|1 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise (I) Short Answer questions 1|1 Videos

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos

Similar Questions

Explore conceptually related problems

The three stable isotopes of neon Ne^20, Ne^21 and Ne^22 have respective abundances of 90.51% , 0.27 % and 9.22% . The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u respectively. Obtain the average atomic mass of neon

the three stable isotopes of 9.051% , 0.27% and 9.22% the atomic masses of the three isotopes are 19.99 u , 20 .99 u and 21.99u respectively the average atomic mass of neon will be

Chlorine has two isotopes of atomic mass units 34.97 u and 36.97 u . The relative abundances of these two isotopes are 0.735 and 0.245 respectively. Find out the average atomic mass of chlorine.

Amongst the three isotopes of Neon - ._(10)^(20)Ne,._(10)^(21 )Ne and _(10)^(22)Ne the nucleus with the lowest n/p ratio is

Two stable isotopes of lithium ._3^6Li and ._3^7Li have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.0152 u and 7.016004 u respectively. Find the atomic weight of lithium

Natural uranium is a mixture of three isotopes _92^234U , _92^234U , _92^235U and _92^238U with mass percentage 0.01%, 0.71% and 99.28% respectively. The half-life of three isotopes are 2.5xx10^5yr , 7.1xx10^8yr and 4.5xx10^9yr respectively. Determine the share of radioactivity of each isotope into the total activity of the natural uranium.