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An isobar of ""(20)^(40)Ca is...

An isobar of `""_(20)^(40)Ca` is

A

`""_(18)^(40)Ar`

B

`""_(20)^(38)Ca`

C

`""_(20)^(42)Ca`

D

`""_(19)^(39)K`

Text Solution

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The correct Answer is:
A
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An isobar of ._(20)Ca^(40) is

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The calculated mass of ""_(20)Ca^(40) is 40.328 u. It releases 306.3 MeV energy in a nuclear process . Its isotopic mass is

Find the atomic structure of ._(20)^(40)Ca .

Let m_(p) be the mass of a poton , M_(1) the mass of a _(10)^(20) Ne nucleus and M_(2) the mass of a _(20)^(40) Ca nucleus . Then

What is the minimum photon energy required to remove the least bound neutron of ._(20)^(40)Ca and ._(18)^(40)Ar . The nesessary atomic masses (in mu ) are given below: {:(M(.^(40)Ca)=39.962591 u),(M(.^(39)Ca)=38.970719 u),(M(.^(40)Ar)=39.962383 ),(M(.^(39)Ar)=38.964314 u),(" "m_n=1.008665 u):}

Which of the following pairs represent isotopes and which represent isobars? ""_(19)^(40)K, ""_(20 )^(40)Ca Calculate the difference in the number of neutrons in the isotopic pairs.

DINESH PUBLICATION-NUCLEAR AND RADIO CHEMISTRY-Evaluate Yourself
  1. An isobar of ""(20)^(40)Ca is

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  2. One among the following set of quantum numbers defines the highest ene...

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  3. If threshold wavelength (lambda(0)) for ejection of electron from meta...

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  4. All elements in the third period have

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  5. One among the following species is planar

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  6. From amongst the following triatomic molecules the least bond angle is...

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  7. The atoms/ion listed in correct order of increasing size are

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  8. The solution of Schrodinger equation for hydrogen leads to three quant...

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  9. In which of the following are all the electrons paired ?

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  10. The diamagnetic molecules from among mole cules of second period eleme...

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  11. Which of the following statements is correct ?

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  12. Amongst phosphorus halides the correct increasing order of bond angle ...

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  13. The State of hybridisation of phosphorus (Z=15) in phosphate ion (PO(4...

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  14. The strength of sigma bond formed by s-s, s-p & p-p overlaps are in th...

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  15. In a crystalline solid, W atoms are at corners, O atoms at edge centre...

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  16. A binary solid, A^(+) B^(-) ( formula mass= 60) has a CsCl structure....

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  17. The molecular orbital shown below is described as

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  18. Which among the following molecules has the largest dipole moment ?

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  19. The difference between DeltaH and Delta E at constant voluem is equal ...

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  20. If the critical frequency (v(0)) for emission of photoelectrons from a...

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  21. The expected wavelength at which the first line of P fund series shall...

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