Question

The element having 7 electrons in its outermost orbit is —

• A. Non-metal
• B. Metal
• C. Metalloid
• D. Inert gas

Hint:

Halogens (Group 17 elements) are non-metals with 7 valence electrons and show high reactivity.

Answer 1

The Correct Option is A

Step 1: Recall the electronic configuration rule.
Elements that have 7 electrons in their outermost shell belong to Group 17 of the periodic table, known as the halogen group (e.g., Fluorine, Chlorine, Bromine, Iodine).
Step 2: Determine their properties.
These halogens are highly reactive non-metals. They gain one electron to achieve noble gas configuration, forming negative ions.
Step 3: Conclusion.
Thus, any element having 7 electrons in its outermost orbit is a non-metal.