Compare the boiling point of helium and argon. Explain.
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Explanation:
Helium boils at −269 ∘C. Argon has larger mass than helium and have larger dispersion forces. ... Therefore, its boiling point (−186 ∘C) is more than that of He. Similarly, because of increased dispersion forces, the boiling and melting points of monoatomic noble gases increase from helium to radon.
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The van der Waals force increases with the increase in the size of the atom, and therefore, in general, the boiling and melting points increase from He to Rn. Helium boils at −269 ∘C. Argon has larger mass than helium and have larger dispersion forces. Therefore, its boiling point (−186 ∘C) is more than that of He.
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