HALOGENS CK12
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How many valence electrons do all halogens have?
7
Which other elements of the periodic table do halogens readily react with to form halide salts?
alkali metals and alkaline earth metals
Where are halogens frequently found in nature?
as salts in the ocean
Which halogen is a purple-gray solid?
iodine
If "n" stands for a given principal energy level, what is the outer electron configuration of the halogens?
ns^2 np^5
During most chemical reactions, what happens to the atoms of a halogen?
they gain one electron
Which halogen is a dark orange liquid?
bromine
Element A is located between group 16 and noble gas on the periodic table. A is a(n)
halogen
