Question

hydrogen is a _____.
metal
metalloid
non - metal
none of these

Explanation:

Hydrogen has properties like low - density, non - malleability, and it forms acidic compounds in some cases. These are characteristics of non - metals. Metals are typically good conductors, malleable, and ductile. Metalloids have properties intermediate between metals and non - metals. Hydrogen does not fit the criteria for metals or metalloids.

Answer:

C. non - metal