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Vishrant Vasavada Grade: 11
        Naturally occuring flourine is entirely 19 F but suppose that it were 50% of 19 F and 50 of 20 F. Whether gaseous diffusion of UF6 would then work to separate U235 from U 238.
7 years ago

Answers : (1) chandra sekhar
10 Points

Hi Vishrant,

if it is entirely 19F then we can seperate U235 and U238 because the molecular weights of UF6 will be 349 and 352 respectively.

But when 50% 19 F and 50% 20F are there then the Fs in UF6 may be in any proposition.


U-235 and 6 20Fs   & U-238 and 3 20Fs + 3 19Fs will have same molecular weights.

similarly we can get the many proportions with U235 and U238 having same molecular weights.... so it is difficult to seperate.

7 years ago
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