Which of the following does not exist as an octatomic solid?(a) Sulphur(b) Tellurium(c) Selenium(d) OxygenI got this question during an internship interview.My doubt stems from P-Block topic in portion P-Block Elements of Chemistry – Class 12

Which of the following does not exist as an octatomic solid?(a) Sulphu

1.	Which of the following does not exist as an octatomic solid?(a) Sulphur(b) Tellurium(c) Selenium(d) OxygenI got this question during an internship interview.My doubt stems from P-Block topic in portion P-Block Elements of Chemistry – Class 12
Answer» Correct option is (d) Oxygen The explanation is: Oxygen exists as a diatomic gas at ROOM temperature while other elements (S, Se and Te) exist as OCTATOMIC SOLIDS. Due to small SIZE and HIGH electronegativity, oxygen atom forms pπ – pπ double bond with other oxygen atom to form O = O molecule. The intermolecular forces of attraction between oxygen molecules are weak van der Waals forces and hence oxygen exists as a diatomic gas at room temperature.

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