JEE Main 2022 · 26 Jun · Shift 1 · Chemistry Q70

← JEE Main 2022 · 26 Jun · Shift 1

ChemistrySingle correct+4 / -1Question 70 of 90

The correct order of melting points of hydrides of group 16 elements is :

\mathrm{H_2S<H_2Se<H_2Te<H_2O}

\mathrm{H_2O<H_2S<H_2Se<H_2Te}

\mathrm{H_2S<H_2Te<H_2Se<H_2O}

\mathrm{H_2Se<H_2S<H_2Te<H_2O}

Answer and worked solution

Official answer: A

Melting points (°C): $\mathrm{H_2S}$ −85.5, $\mathrm{H_2Se}$ −65.7, $\mathrm{H_2Te}$ −49, rising with size; $\mathrm{H_2O}$ (0) is highest because of hydrogen bonding.

(A)

Topics:Group 16 Hydrogen bonding

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JEE Main 2022 · 26 Jun · Shift 1, Chemistry question 70