Question

The discovery in the 1960s that xenon and fluorine react to form a molecular compound was a surprise to most chemists, because it had been thought that noble gases could not form bonds.
a. Why was it thought that noble gases could not form bonds?

Accepted Answer

Understand the electronic configuration of noble gases: Noble gases are located in Group 18 of the periodic table and have a full valence shell of electrons. This means their outermost electron shell is completely filled, making them highly stable and unreactive under normal conditions. Recognize the concept of chemical bonding: Atoms form bonds to achieve a more stable electronic configuration, typically by sharing, gaining, or losing electrons. Since noble gases already have a stable configuration, they do not have a tendency to form bonds. Consider the role of electronegativity and ionization energy: Noble gases have very high ionization energies, meaning it requires a significant amount of energy to remove an electron. Additionally, their electronegativity is low, so they do not readily attract electrons from other atoms to form bonds. Understand the historical perspective: Before the 1960s, chemists believed that noble gases were completely inert due to their stable electronic configuration and lack of chemical reactivity observed in experiments. This led to the assumption that noble gases could not form bonds. Learn about the breakthrough discovery: The reaction between xenon and fluorine demonstrated that under specific conditions, such as high pressure or the presence of highly electronegative elements like fluorine, noble gases can form compounds. This discovery challenged the earlier belief and expanded our understanding of chemical bonding.

The discovery in the 1960s that xenon and fluorine react to form a molecular compound was a surprise to most chemists, because it had been thought that noble gases could not form bonds.
a. Why was it thought that noble gases could not form bonds?

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Concetti chiave

Noble Gases

Chemical Bonding

Reactivity of Elements

The discovery in the 1960s that xenon and fluorine react to form a molecular compound was a surprise to most chemists, because it had been thought that noble gases could not form bonds. a. Why was it thought that noble gases could not form bonds?

Risposta video verificata per un problema simile:

Concetti chiave

Noble Gases

Chemical Bonding

Reactivity of Elements

The discovery in the 1960s that xenon and fluorine react to form a molecular compound was a surprise to most chemists, because it had been thought that noble gases could not form bonds.
a. Why was it thought that noble gases could not form bonds?