Question 387: Atoms & Nuclei

Question

The energy released per fission of nucleus of $$^{240}$$X is 200 MeV. The energy released if all the atoms in 120g of pure $$^{240}$$X undergo fission is ____________ $$	imes$$ 10$$^{25}$$ MeV.
(Given $$\mathrm{N_A=6	imes10^{23}}$$)

Accepted Answer

$120 \mathrm{~g}$ of $^{240}X$ will have $\frac{1}{2}$ mole of $X$
Number of atom of $X=\frac{1}{2} 	imes N_{A}=3 	imes 10^{23}$ atom
Energy released $=3 	imes 10^{23} 	imes 200 ~ \mathrm{MeV}$
$$
=6 	imes 10^{25} ~\mathrm{MeV}
$$

Atoms & Nuclei

The energy released per fission of nucleus of $^{240}X is 200 MeV. The energy released if all the atoms in 120g of pure ^{240}X undergo fission is ____________ \times 10^{25} MeV. (Given \mathrm{N_A=6\times10^{23}}$)

Choose the correct answer: