Question

Consider the following properties of the noble gases:
$I$: they readily from compounds which are colourless.
$II$ : they generally do not form ionic compounds.
$III$ : they have variable oxidation states in their compounds.
$IV$ : they generally do not form covalent compounds.

Select the the correct properties.

• A. $I,II$ and $III$ only
• B. $II$ and $III$ only
• C. $I$ and $III$ only
• D. $I$ only

Answer 1

Answer: (B)

$II$ and $III$ only

In noble gases, as their octet is complete, so they don't have tendency to form compounds. Only $Xe$ forms few compounds with F, O and other noble gases and these compounds have covalent character.

$Xe$ shows variable oxidation in these compounds like $XeOF$ and $Xe{F}_2$.