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(i) Noble gases have large positive values of electron gain enthalpy.

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asked Dec 20, 2017 in Chemistry by sforrest072 (157,439 points) ● 63 ● 448 ● 1279

(i) Noble gases have large positive values of electron gain enthalpy.
(ii) Helium is used by scuba divers.
(iii) No chemical compound of helium is known.

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answered Dec 20, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 22
selected Dec 20, 2017 by sforrest072
 
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[Hint : (i) Due to their electron conflguration.
(ii) Due to its less solubility in blood.
(iii) Due to its high ionization enthalpy.]

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