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  Inorganic Chemistry

COMPOUNDS OF XENON :

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(In 1962, N. Bartlett noticed that PtF6 is a powerful oxidizing agent which combines with molecular oxygen to form ionic compound, dioxygenyl hexafluoro platinate (v) O+2[PtF6]– , O2(g) + PtF6(g) —> O+2[PtF6] –,This indicates that PtF6 has oxidized O2 to O+2 . Now, oxygen and xenon have some similarities,

(i) The first ionization energy of Xe gas (1170 kJ mol–1) is fairly close to that of oxygen (1166 kJ mol–1).

(ii) The molecular diameter of oxygen and atomic radius of Xe are similar (4Å)

On this assumption, Bartlett reacted Xenon and PtF6 in gas phase and a orange yellow solid of the composition XePtF6 was obtained,

Xe(g) + PtF6(g) —> Xe+ [PtF6]–(s).
                               Orange yellow

Some important stable compounds of Xe are,

+2

+4

+6

XeF2

XeF4, XeOF2

XeF6, XeOF4 , XeO3


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