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nuclear physics please help!

the nuclear equation below shows the decay of radium to radon with the release of energy

226 222 4
Ra ------------> Rn + He + energy
88 86 2

in answering the question the following information might be useful
masses

Ra=226.025 u
He=4.002603 u
neutron= 1.008605 u
Rn=222.01761 u
proton= 1.007276 u

u=1.661 * 10^-27 kg

show by appropriate calculations that radon is more stable than radium

i have nooooo idea can anyone help?

OP

anyone????? i really need some help

thanks

work out if the energy is positive or negative. if positive, radon is more stable than radium. if negative, radium is more stable than radon.

OP

elpaw

work out if the energy is positive or negative. if positive, radon is more stable than radium. if negative, radium is more stable than radon.

how do i do that??????

OP

dont worry actualy i get it now!! thanks for the help

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