Question

The elements B, Si and Ge are

• A. semi-metals
• B. non-metals
• C. metals
• D. non-metal, semi-metal, and semi-metal respectively

Answer 1

The correct option is D

non-metal, semi-metal, and semi-metal respectively

Semi metals

Semimetals or metalloids are chemical elements that have properties of both metals and nonmetals.

non-metals

The non-metals are elements on the right of the periodic table. Non-metals can be gases, liquids, or solids. Non-metals are dull in color, not shiny like metals.

Explanation for the correct option:

1. Silicon(Si) and germanium(Ge) have the characteristics of both metals and non-metals. Hence they are semimetals.
2. Boron(B) is a nonmetal because it does not have a high affinity for bonding with other nonmetals. It lacks a valence electron and does not form a covalent bond with other elements.

Concluding statement:

Silicon(Si) and germanium(Ge) are semimetals but boron(B) is non-metal

Hence the right option is D.