Halogen - Diatomic Halogen Molecules

Diatomic Halogen Molecules

halogen molecule structure model d(X−X) / pm
(gas phase)
d(X−X) / pm
(solid phase)
fluorine
F2
143
149
chlorine
Cl2
199
198
bromine
Br2
228
227
iodine
I2
266
272
astatine
At2

The elements become less reactive and have higher melting points as the atomic number increases.

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