Question

The smallest unit of a compound is called a molecule.
A. True
B. False

Answer 1

Hint- In order to comment whether a given statement is true or false first we have to understand the term compound and molecule. Then we will see whether the given statement is true or false.

Complete answer:

Given statement is: The smallest unit of a compound is called a molecule.
Compound: When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound.

Molecule: A molecule is a particle made up of two or more atoms that are chemically bonded together; the number of atomic nuclei making up a molecule is a determinate number.

Groups of atoms which are bonded together to represent the "fundamental measures of a chemical compound" that are in a chemical reaction are referred to as molecules. These Compounds have atoms of both elements chemically bonded to each other, that is a molecule is the basic unit of the Compound.

Hence an atom is the smallest particle of an element while the molecule is the smallest particle of a compound.
So, the correct answer is option A.

Note- When the elements combine, some of the individual property of the elements is lost and the newly formed compound has new properties. However many compounds do not follow such as NaCl and other ion based compounds, they have pairs of Na and Cl which can be called as the basic unit in the salt rather than "individual molecules of NaCl".