Which element is the first element in group 13 of the periodic table?

Correct option is A

The correct answer is (a) Boron
· Boron is the first element in Group 13 (also called boron group) of the periodic table.
· It is a metalloid, showing properties of both metals and non-metals.
· Boron has atomic number 5 and electronic configuration 1s² 2s² 2p¹.
· Group 13 elements show a gradual metallic character down the group.
· Boron is essential in glass, detergents, and agriculture.
· It is rare in nature and mostly found in borax.
Information Booster:
• Group 13 elements: Boron, Aluminium, Gallium, Indium, Thallium.
• Boron is trivalent and forms covalent compounds.
• Used in semiconductors and borosilicate glass.
• Forms boric acid, used as an antiseptic.
• Shows diagonal relationship with Silicon.
• Exists as boron fibers, boranes, and boron carbide.
Additional Information:
• Indium – Soft metal, below Gallium in group 13.
• Aluminium – Second element in group 13.
• Gallium – Third in group, known for melting in hand.