The halogens are a group of elements on the Periodic Table (group 17/7A) which are all highly reactive non-metals. They consist of fluorine (F), chlorine (Cl), Bromine (Br), and Iodine (I). Astatine (At) is also in that group, but is rarely encountered in chemistry. They are unique because the first four referred to above are all diatomic, which means they exist in nature as a diatomic molecule with a single covalent bond. Because they have seven valence electrons, the octet rule says they only need to acquire one more to achieve a full valence shell. This means they are one of the most reactive groups of elements, and they react readily with most metals.
0.1% of are DNA makes us unique.
because it is in a semi molten
Not really. It is the lightest and most active of the halogen gasses, a group which includes chlorine, bromine and iodine.
Yes, I (iodine) is a halogen.
hydrogen gas and helium gas which makes it unique.
The Audi A4 has a unique and distinctive Singleframe grille, as well as special Halogen headlights. The body shape is unique to the A4 and makes the car identifiable from any other model.
it has not yet been discovered
There is nothing that makes any individual unique.
what makes you unique is your own personality its what you do to make your self special
It's plants, animals, and weather makes it unique
0.1% of are DNA makes us unique.
it makes it unique because it is only for a sertain animal and will survive for that animal only What makes a habitat unique, is the animal that resides there. The habitat makes it possible for that organism to survive and thrive.
what makes angola unique
What makes a portugese man of war unique is its shape
Its all their perfect understanding of the market which makes them so popular and unique.
because it is in a semi molten
Not really. It is the lightest and most active of the halogen gasses, a group which includes chlorine, bromine and iodine.