J. D. Lee Solutions for Chapter: Group 18 - the Noble Gases, Exercise 1: Exercise 1

How much argon is present in the earth's atmosphere? How is $\mathrm{Ar}$ obtained commercially and what is it used for?

Explain why $\mathrm{Ar}$ is used in the Kroll process to extract $\mathrm{Ti}$, for welding and in electric light bulbs. Draw the structures of ${\mathrm{XeF}}_2, {\mathrm{XeF}}_4$ and ${\mathrm{XeF}}_6$.

Explain why $\mathrm{Ar}$ is used in the Kroll process to extract $\mathrm{Ti}$, for welding and in electric light bulbs. How many of these compounds can be prepared from $\mathrm{Xe}$?

How did Bartlett interpret the reaction between $\mathrm{Xe}$ and ${\mathrm{PtF}}_6$ and how is this reaction interpreted lately?

Among the following compounds, how may are prepared from $\mathrm{Xe}$ directly?

${\mathrm{XeF}}_2, {\mathrm{XeF}}_{4 } {\mathrm{XeF}}_6 \mathrm{and} {\mathrm{XeO}}_3$

How are the compounds of ${\mathrm{XeO}}_3, {\mathrm{XeOF}}_4$ and ${\mathrm{Ba}}_2{\mathrm{XeO}}_6$ are prepared, and what are their structures?

'In some ways, the discovery of the noble gas compounds has created more problems than it has solved.' Discuss this statement with particular reference to the stability of a closed electron shell and the participation of $\mathrm{d}-$orbitals in bonding by elements of the $\mathrm{s}-$ and $\mathrm{p}-$blocks.

Suggest reasons why the only binary compounds of the noble gases are fluorides and oxides of $\mathrm{Kr},$ $\mathrm{Xe}$ and $\mathrm{Rn}$: