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If the atomic weight oc C and SI are 12 ...

If the atomic weight oc C and SI are `12` and `28` respectively , then what is the ratio of the number of neatrons in them?

A

` 3: 7`

B

` 7 : 3`

C

` 3: 4`

D

` 6 : 28`

Text Solution

Verified by Experts

The correct Answer is:
A
Carbon is `_6 C^(12)` and silicon is ` _(14)Si^(28)`.
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P BAHADUR-ATOMIC STRUCTURE-Exercise 3A
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  2. In hydrogen atom which enrgy level order si bnot correct ?

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  3. If the atomic weight oc C and SI are 12 and 28 respectively , then wha...

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  4. Which will be the most stble among Cu^(+) , Fe^(+) Fe^(2+) and Fe^(3...

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  5. Which jave the same number of s-electrons as the d-dlectrons in Fe^(2...

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  6. Which orbital has two angular nodal planes ?

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  7. psi^2 ,( psi) the wave function resperesents the probability of findi...

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  8. " Positronium " is the name given to an aotm like combination formed b...

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  9. The configureation is 1s^(2) 2s^(2) 2p^(5) , 3s^(1) shows :

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  10. The orbital cylindrically symmetrical abut x-axis is :

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  11. Which orbital is represented by the complete wave funcion psi (420) ?

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  12. The number fo bodal planes is greatest for the orbital :

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  13. The electronic velocity in the fourth Bohr's orbit fo hydrogen is u . ...

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  14. Atomic weight of Ne is 20.2 Ne is a mixuture of Ne^(20) and Ne^(22...

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  15. The ammount of enrgy requred to remove the electron from a Li^(2+) ion...

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  16. The ration of spectific charge ( e//m) of a proton to that of an alpha...

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  17. The work function for a metal si 4 eV. To emit a photoelectron of zer...

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  18. In two individual hydrogen atoms electrons move around the nucleus in ...

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  19. If the series limit of wavelngth of the Lymman series for the hydrogen...

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  20. What is the difference in the angular momentum associated with the e...

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