Question

which of the following represents an atom?
(a) Cl2
(b)Na
(c)Cl-
(d)NaCl​

Answer 1

Answer:

b. Na

Explanation:

Cl2 is molecule Of an element , Cl- is ion and Nacl is molecule of a compound.

Answer 2

To find:

An atom among the following options:

• Cl2

• Na

• Cl-

• NaCl

Solution:

First of all , let's define an atom.

• Atoms are the basic building blocks of matter and the defining structure of elements.

Keeping this definition in mind , we can say that the atom in the given option is Na (Sodium)

The other options are eliminated because:

• Cl- is an ion with a single negative charge.

• NaCl is a compound of two elements namely Sodium and Chlorine.

• Cl2 is a molecule of a specific element namely chlorine.

$\star$ Hope It Helps.