which pure substance can be classified as an element?\no h₂\no no₃\no nacl\no h₂so₄
which pure substance can be classified as an element?\no h₂\no no₃\no nacl\no h₂so₄
Answer
Brief Explanations:
An element is a pure substance made of only one - type of atom. $H_2$ is a di - atomic molecule of the element hydrogen. $NO_3$ is a poly - atomic ion, $NaCl$ is a compound made of sodium and chlorine, and $H_2SO_4$ is a compound made of hydrogen, sulfur, and oxygen.
Answer:
$H_2$