_Nitrogen_ and _chlorine_ appear not to react with fluorine.
_Sulphur._--In contact with fluorine gas, sulphur rapidly melts and
inflames. A gaseous fluoride of sulphur is formed, which possesses a
most penetrating odor, somewhat resembling that of chloride of
sulphur. The gas is incombustible, even in oxygen. When warmed in a
glass vessel, the latter becomes etched, owing to the formation of
silicon tetrafluoride, SiF_{4}. Selenium and tellurium behave
similarly, but form crystalline solid fluorides.
_Bromine_ vapor combines with fluorine in the cold with production of
a very bright but low temperature dame. If the fluorine is evolved in
the midst of pure dry liquid bromine, the combination is immediate,
and occurs without flame.
_Iodine._--When fluorine is passed over a fragment of iodine contained
in the horizontal tube, combination occurs, with production of a pale
flame. A very heavy liquid, colorless when free from dissolved iodine,
and fuming strongly in the air, condenses in the cooled receiver.
Pages:
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186