Question

what are bromine, iodine, fluorine, astatine and tennessine collectively known as ?

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Answer 1

Answer:

Bromine, iodine, fluorine, chlorine, astatine, and tennessine collectively known as halogens.

Answer 2

Answer:

Bromine, iodine, fluorine, chlorine, astatine, and tennessine collectively known as halogens.

Explanation:

Halogens are placed in group 17 of modern periodic table. ... Many halogens have ability to form acid with hydrogen.

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