Question

Which one of the following elements is/are non-metal?

• A. C
• B. Ge
• C. Sn
• D. Si

Answer 1

Answer: (A), (D)

The correct options are
A C
D Si

Carbon and silicon are non-metals.
Germanium is a metalloid.
Tin and Lead are soft metals with low melting points.

THEORY
Physical properties:

1. All group 14 members are solids.
2. Carbon and silicon are non-metals.
3. Germanium is a metalloid.
4. Tin and Lead are soft metals with low melting points.
5. Melting points and boiling points of group 13 elements is less than Melting points and boiling points of group 14 elements due to stronger metallic bonding.