Chlorine, bromine and iodine resemble each other in that ...
Chlorine, bromine and iodine resemble each other in that all?
dissolve in alkalis
react violently with hydrogen without heating
displace each other from solutions of their salts
are gases
are liquids
Correct answer is A
Alkali metals tend to lose one electron and form ions with a single positive charge.
They form ionic compounds (salts) in reaction with the halogens (alkali halides)
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