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In general, the boiling points of compounds increase down a group in the periodic table. The melting points and boiling points for the hydrogen compounds of group 6A elements are in the table below.


Melting Point (°C)

Boiling Point (°C)

H2O

0.0

100.0

H2S

-82.0

-60.0

H2Se

-65.7

-41.2

H2Te

-49.0

-2.2

Use your understanding of chemistry to propose an explanation for the anomaly in the trend for the hydrogen compounds of group 6A elements shown in the table below?

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