Question

The electronic configuration of halogens in their valence shell is:

Answer 1

Hint :In order to answer the given question, to know the electronic configuration of halogens in their valence shell, we should go through the periodic table and the configuration of the whole halogen group.

Complete Step By Step Answer:
The electronic configuration of halogens in their valence shell is $ n{s^2}n{p^5} $ .
Halogens are non-metals. Fluorine and chlorine are gases at room temperature, while bromine is a liquid. Solids are iodine and astatine. The reactivity of halogens decreases as they progress from fluorine to astatine.
At normal temperature and pressure, the halogens are the only periodic table group that includes elements in three of the main states of matter. When halogens are bound to hydrogen, they all produce acids. The majority of halogens are made from minerals or salts. Chlorine, bromine, and iodine, the middle halogens, are often used as disinfectants. The most common form of flame retardant is organic bromides, whereas elemental halogens are hazardous and can be fatal.

Note :
The group of halogens is the only periodic table group which contains elements in all three familiar states of matter at standard temperature and pressure Fluorine $ (F) $ is a pale yellow gas Chlorine $ \left( {Cl} \right) $ is a greenish gas Bromine $ (Br) $ is a dark red liquid.