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Chapter 22: Problem 31

Why does xenon form stable compounds with fluorine, whereas argon does not?

Short Answer

Expert verified
Xenon forms stable compounds with fluorine because it has lower ionization energy as a heavier noble gas, allowing it to lose or share electrons with highly electronegative fluorine to achieve stable electronic configurations. Conversely, Argon does not form stable compounds with fluorine due to its higher ionization energy and low reactivity, making it energetically unfavorable for it to lose or share electrons with fluorine.

Step by step solution

01

Identify the Electronic Configurations of Xenon and Argon

Xenon (Xe) and Argon (Ar) are both noble gases found in Group 18 of the periodic table. Noble gases possess stable electronic configurations, which means they have full valence electron shell. Both of their electronic configurations are: - Argon (Ar): 1s虏2s虏2p鈦�3s虏3p鈦� - Xenon (Xe): 1s虏2s虏2p鈦�3s虏3p鈦�4s虏3d鹿鈦�4p鈦�5s虏4d鹿鈦�5p鈦� Both Argon and Xenon have full valence electron shells, with Argon having 2 electrons in its 3p orbital and Xenon having 6 electrons in its 5p orbital.
02

Understand the Reactivity of Noble Gases

Noble gases are generally inert and unreactive due to their stable electronic configurations. However, the reactivity of a noble gas increases from the top to the bottom of the group. This is because the size of the atom increases and ionization energy (the energy required to remove an electron) decreases as we move down the group. Thus, heavier noble gases like Xenon are more reactive than lighter ones like Argon since they have lower ionization energy.
03

Formation of Chemical Bonds

Chemical bonds occur when atoms combine to achieve more stable electronic configurations. In the case of Xenon and fluorine, the reactivity of Xenon is sufficient enough for the formation of a bond with fluorine (which is one of the most electronegative elements). Xenon can lose or share electrons with fluorine to form stable compounds such as XeF鈧�, XeF鈧�, and XeF鈧�. However, Argon has a very low reactivity due to its high ionization energy, and it does not easily form bonds with other elements, including fluorine. This is because the energy required to remove an electron from Argon is higher than the energy released through the formation of any Argon-fluorine bond.
04

Conclusion

Xenon forms stable compounds with fluorine because it is a heavier noble gas with lower ionization energy, which allows it to lose or share electrons with fluorine to achieve a stable electronic configuration. On the other hand, Argon does not form stable compounds with fluorine due to its higher ionization energy and low reactivity, as it is energetically unfavorable for Argon to lose or share electrons with fluorine.

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