An element with seven electrons in its outer shell belongs to Group 17 of the periodic table, also known as the halogens. The elements in this group are known for being highly reactive nonmetals. The halogens include:
- Fluorine (F) - Atomic number 9
- Chlorine (Cl) - Atomic number 17
- Bromine (Br) - Atomic number 35
- Iodine (I) - Atomic number 53
- Astatine (At) - Atomic number 85
- Tennessine (Ts) - Atomic number 117 (a synthetic element)
The specific element you are referring to that has seven valence electrons could be either chlorine or bromine, as both of these elements have that characteristic and are commonly studied in scientific contexts.
If you need more specific information or have a different aspect of the element you're interested in, please let me know!
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