(B) An element is defined as a pure substance that consists of only one type of atom.It cannot be decomposed into simpler substances by ordinary chemi

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$A$ pure substance consisting of only one type of atom.

(B) An element is defined as a pure substance that consists of only one type of atom.It cannot be decomposed into simpler substances by ordinary chemical or physical methods.Examples include $Fe$,$Au$,$O_2$,and $H_2$.

Class 11 Chemistry Some Basic Concepts of Chemistry Matter and Separation of mixture

Easy

What is an element?

A
$A$ substance that can be broken down into simpler substances by chemical means.
B
$A$ pure substance consisting of only one type of atom.
C
$A$ mixture of two or more different types of atoms.
D
$A$ compound formed by the chemical combination of elements.