Hydrogen sulfide, H2S, is a covalent compound.a. Draw a dot-and-cross diagram for

Hydrogen sulfide, H₂S, is a covalent compound.

a. Draw a dot-and-cross diagram for hydrogen sulfide.

b. Draw a diagram of a hydrogen sulfide molecule to show its shape. Show on your diagram:

i. The value of the bond angle

ii. The partial charges on each atom as δ+ or δ–
iii. An arrow showing the exact direction of the dipole in the molecule as a whole.

c. Oxygen, O, sulfur, S, and selenium, Se, are in the same group in the Periodic Table.
i. Explain why hydrogen selenide, H₂Se, has a higher boiling point than hydrogen sulfide, H₂S.
ii. Explain why the boiling point of water is so much higher than the boiling point of hydrogen sulfide.

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