Question

What all elements from the periodic table are halogens?

Answer 1

Hey there
Here's your answer
1 fluorine
2. Chlorine
3 bromine
4. Iodine
5 astatine
6. Ununseptium ( according to improved periodic table)
Hope it helps
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Answer 2

No. The member of the group or fluorine chlorine bromine iodine and astatinin an combined state halogens exists as diatomic molecules and are coloured for example fluorine is yellowish coloured gas chlorine is greenish yellow gas bromide is reddish brown liquid and iodine is grey white solid.

They all have 7 electrons in their valence shell.

They are atoms deadly accept an electron to form and in negative and iron suggest F - and Cl - etc.

Are quite reactive.

Above are the property of halogens so in periodic table all elements are not halogens..Thank You