Answer:
ARESENIC is in the 5A category
Explanation:
edge 2020
5A (Nitrogen group) elements tend to react to gain 3 electrons to be like noble gas.
5A group known as nitrogen group. In these group elements contains nonmetals, metals, halogens, noble gases and metalloids.
These elements react with oxygen to form acidic compounds.
Configuration of 5A group: 2s2 2p3, 3s2, 3p2
Example: nitrogen, phosphorus, arsenic etc.
Actinium (Ac) atomic number = 89 (it is a silvery radioactive metallic material. Actinium-227 is extremely radioactive element).
Arsenic (Ar) atomic number = 33 (it found in many minerals usually in combination of sulfur and metals but it also found in pure elemental crystal. It is a metalloid).
Rhenium (Re) atomic number = 75 (it is found in earth crust. It is used in additive to tungsten and molybdenum-based alloys. It is very toxic to humans it may causes skin related disease).
Therefore, 5A (Nitrogen group) elements tend to react to gain 3 electrons to be like a noble gas.
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