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Two stable isotopes .3^6Li and .3^7Li ha...

Two stable isotopes `._3^6Li` and `._3^7Li` have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.01512 u and 7.01600 u respectively. The atomic weight of lithium is

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Average atomic mass `=(p_1m_1+p_2m_2)/(p_1+p_2)`
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(a) Two stable isotope of ._3Li^6 and ._3Li^7 have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.01512 and 7.01600 u respectively. Find the atomic weight of lithium. (b) Boron has two stable isotopes ._5B^(10) and ._5B^(11) . Their respective masses are 10.01294 u and 11.00931 u, and the atomic weight of boron is 10.81 u. Find the abundances of ._5B^(10) and ._5B^(11) .

(a) Two stable isotope of ._3Li^6 and ._3Li^7 have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.01512 and 7.01600 u respectively. Find the atomic weight of lithium. (b) Boron has two stable isotopes ._5B^(10) and ._5B^(11) . Their respective masses are 10.01294 u and 11.00931 u, and the atomic weight of boron is 10.81 u. Find the abundances of ._5B^(10) and ._5B^(11) .

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

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

The three stable isotopes of neon ._10Ne^(20), ._10Ne^(21) and ._10Ne^(22) have respective abundances 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.

Given that the abundacne of isotopes .^(54)Fe , .^(56)Fe , and .^(57)Fe is 5%, 90% and 5% respectively. The atomic mass of Fe is

Given that the abundacne of isotopes .^(54)Fe , .^(56)Fe , and .^(57)Fe is 5%, 90% and 5% respectively. The atomic mass of Fe is

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

The relative abundance of two isotopes of an element with atomic weight 85 and 87 is 75% and 25% respectively. Then calculate the average atomic weight of element

The mass number of three isotopes of an element are 11,12 and 13 .Their percentage ohandances 80,15 and 5 , respectively .What is the atomic weight of the element ?

AAKASH INSTITUTE ENGLISH-NUCLEI-Try Yourself
  1. Select the pairs of isotopes and isotones form the following nuclei: ...

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  2. A nucleus has atomic number 11 and mass number 24. State the number of...

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  3. Two stable isotopes .3^6Li and .3^7Li have respective abundances of 7....

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  4. Compare the radii of two nuclei with mass numbers 1 and 27 respectivel...

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  5. Assuming the nuclei to be spherical in shape, how does the surface are...

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  6. Calculate the packing fraction of alpha-particle from the following da...

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  7. The binding energy per nucleon for C^(12) is 7.68 MeV and that for C^(...

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  8. in a fission reaction of X and Y is 8.5 MeV , whereas of ""^(236)...

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  9. The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = at...

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  10. Binding energy of a nucleus is of the order of:

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  11. Binding energy per nucleon versus mass number curve for nuclei is show...

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  12. After a certain lapse of time , fraction of radioactive polonium undec...

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  13. The half-life of radon is 3.8 days. After how many days 19/20 of the s...

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  14. A radioactive element reducess to 32st of its initial value in 1000 ye...

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  15. A radioactive element .90 X^238 decay into .83 Y^222. The number of be...

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  16. What is the respective number of alpha and beta-particles emitted in t...

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  17. Which of the following is used as a moderator in nuclear reactors?

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  18. Nuclear - Fission is best explained by:

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  19. A chain reaction in fission of Uranium is possible because

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  20. On bombardment of U^235 by slow neutrons, 200 MeV energy is released. ...

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