What are the very reactive gasses of the periodic table called

the very reactive gasses of the periodic table are called halogens.

The very reactive gasses of the periodic table are the halogens, because they are closer to the noble gasses.

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consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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