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Atomic Number and Mass Number

Which of the ...

Question

Which of the following pairs are isodiaphers?

_{29} {C u}^{65}

and

_{24} {C r}^{55}

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_{29} {C u}^{65}

and

_{24} {C r}^{52}

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_{92} U^{238}

and

_{90} {T h}^{231}

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_{92} U^{235}

and

_{90} {T h}^{232}

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Solution

The correct option is C $_{29} {C u}^{65}$ and $_{24} {C r}^{55}$
Isodiaphers are atoms, having the different atomic number and mass number but have the same difference between a number of neutron and number of a proton.
No of neutrons is Chromium( $C r^{55}$ ) =31
Difference in no of neutrons & protons = 31-24 = 7
No of neutrons in Copper( $C u^{65}$ ) = 36
Difference in no of neutrons & protons = 36-29= 7
Option A is correct.

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Similar questions

α

_{92} U^{235} \to_{2} {H e}^{4} \to

_{90} {T h}^{231}

e = 92

e = 0

e = 90

p = 92

p = 2

p = 90

n = 143

n = 2

n = 141

_{92}^{238} U

α

_{90}^{234} Th

α

(i)_{92}^{238} U (i i)_{90}^{234} T h (i i i)_{92}^{234} U (i v)_{91}^{234} P a

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