Which of the following element combinations will likely form monatomic ions not polyatomic ions?
1. argon and krypton
2. potassium and iodine
3. carbon and nitrogen
4. oxygen and nitrogen

the answer is potassium and iodine. just took the quiz.

Explanation:

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

24

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explanation:  

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