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Which chemical equation best describes the reaction of potassium metal with fluorine gas to form solid potassium fluoride? 

A. K(s) + F2(g) → KF2(s)

B. K(s) + F(g) → KF(s) 

C. K2(g) + F2(g) → 2 KF(s)

D. 2 K(s) + F2(g) → 2 KF(s) 

I guessed B

Verified Answer :

pyromorphite
AK(s) + F2(g) → KF2(s) 

B. K(s) + F(g) → KF(s) 

C. K2(g) + F2(g) → 2 KF(s) 

D. 2 K(s) + F2(g) → 2 KF(s) 

 it exists as a pale yellow diatomic gas at standard conditions!!

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