The stability of C with respect to alpha, beta-plus and ...

[renzo156]

Question 1

The following masses are known:  

n	1.008665 u

H	1.007825 u

Ra​	226.025403 u

What is the binding energy of Ra? (1 u = 931.5 MeV/c2)
◦ 2300 MeV
◦ 1900 MeV
◦ 2100 MeV
◦ 2500 MeV
◦ 1700 MeV

Question 2

The stability of C with respect to alpha, beta-plus and beta-minus decay is to be determined. The following atomic masses are known:

He:	4.002603 u

Be:	7.016928 u

B:	11.009305 u

C:	11.011433 u

N:	11.026742 u

The C nucleus is
◦ not subject to alpha, beta-plus or beta-minus decay.
◦ subject to beta-plus decay only.
◦ subject to beta-plus or beta-minus decay, but not to alpha decay.
◦ subject to alpha decay only.
◦ subject to beta-minus decay only.

[Mochi]

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[renzo156]

TY

[Mochi]

You're welcome