Calculate the binding energies per nucleon

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Reference no: EM13808929

1 Calculate the binding energies per nucleon for the isotopes ₅B¹⁰, ₆C¹², ₇N¹⁴ and ₈O¹⁶. Do the results support our guess that odd-odd isotopes are in a lower class of stability than even-even isotopes?

Data: Atomic masses in amu.

e 0.000549 p 1.007276

n 1.008665 ₅B¹⁰ 10.012938 ₁₁Na²² 21.994435

₁H¹ 1.007825 ₆C¹² 12.000000 ₁₅P³² 31.973908

₁H² 2.014102 ₇N¹⁴ 14.003074 ₂₆Fe⁵⁶ 55.934939

₁H³ 3.016049 ₈O¹⁶ 15.994915 ₈₈Rn²²² 222.017574

₂He⁴ 4.002603 ₁₀Ne²² 21.991384 ₈₈Ra²²⁶ 226.025406

2. You are supplied with a sample containing 7.5 µg of the isotope I¹³¹. Given the decay constant of this isotope is 9.96 ´ 10^-7 s^-1, find

i) the half life of the sample.

ii) the activity of the sample.

iii) the activity of the sample in threeweeks time.

iv) if, in legal terms, the sample is radioactive (I¹³¹ is legally defined as a radioactive substance if it has an activity greater than 40 kBq.) If it is, how long will it remain so?

Reference no: EM13808929

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