Atomic number of halogen

Answer 1

For all practical purposes, there are 4 halogens, and they all have different atomic numbers because they're different elements. They are:

fluorine, #9, chlorine, #17, bromine, #35, and iodine, #53. Astatine is in this group as well but you're not likely to ever have to deal with it. The halogens (minus astatine) are very common in chemistry, and it's important to know how they work. When they form ions, their charge is always -1 because they gain 1 electron. The 4 listed above are also diatomic, held together as a pair by a single, non-polar covalent bond. Dispersion forces cause fluorine and chlorine to exist as gases, bromine as a liquid, and iodine as a solid. They react readily with metals to form crystalline solids. Bonded with hydrogen, they form binary acids. They can also replace hydrogen in hydrocarbons to create fluoro-chloro-bromo-carbaons, which are harmful to the environment.

Answer 2

The atomic number of halogens generally ranges from 9 (fluorine) to 17 (astatine). This group of elements typically consists of fluorine, chlorine, bromine, iodine, and astatine. Each halogen has a unique atomic number corresponding to its position in the Periodic Table.

Answer 3

There are 5 halogen elements. They are in grade 7. halogens are very useful.

Answer 4

117