Answer:
Group 7A
Explanation:
Halogens are the group of 5 elements (F, Cl, Br, I, At) located on the right side of periodic table (Group XVII or 7A)
All these elements have an electronic configuration with 7 (seven) electrons on their most external electronic layers, and this gives them an oxidation state of -1
Also, this characteristic makes halogens to have a great electronegativity, this is, they tend to capture 1 electron from another element, to complete the octet rule (this is, to finally have 8 electrons on their outer layer
For this, they also have some specific characteristics:
- They have a very high ionization energy
- They form diatomic compounds between them
- They are very oxidizing elements (they form salts with other less electronegative elements such as Sodium and Potassium)
