Question

The electronic configuration of an element is 2, 8, 4. State its: (a) group and period in the Modern Periodic Table. (b) name and write its one physical property.

Answer 1

Electronic configuration

• Electronic configuration is also called electronic structure.
• It is defined as the arrangement of electrons in energy levels around an atomic nucleus.

Group and Period

• The given element’s electronic configuration is 2, 8, 4, this means element has 14 electrons.
• The element belongs to the ${14}^{th}$ group and $3^{rd}$period.
• The element is Silicon (Si).

Properties of Silicon

• It is consist of 14 electrons.
• It is a metalloid.
• Its melting point is $1410°C$.
• It is a semiconductor, that is why it is used in making transistors.
• It is the essential component of Portland cement.
• It is majorly used in manufacturing of solar cells and computer chips.