Question

Which of the following is a metal?

• A. Carbon
• B. Chlorine
• C. Fluorine
• D. Sodium

Answer 1

The correct option is D

Sodium

Explanation for correct option:

D. Sodium

Metals:

• A metal is a class of substance that has high electrical/thermal conductivity.
• Metals are usually malleable as well as ductile in nature.
• Sodium is an alkali metal having an atomic number $11$and an atomic symbol $\mathrm{Na}$.
• It is a soft/silvery-white as well as highly reactive metal.

Explanation for incorrect options:
Option A: Carbon is a non-metal that belongs to Group-$14$ having an atomic symbol $\mathrm{C}$ and an atomic number $6$.

Option B: Chlorine is a non-metal that belongs to Group-$17$ having an atomic symbol $\mathrm{Cl}$ and an atomic number $17$.

Option C: Flourine is a non-metal that belongs to Group-$17$ having an atomic symbol $\mathrm{F}$ and an atomic number $9$.

Hence, the correct option is D i.e. Sodium.