Answer:
One kind of atom.
Step-by-step explanation:
An element consists of one kind of atom.
Al is an element, so Al consists of one kind of atom.
C and D are wrong , because Al contains only atoms of aluminium.
Answer: one kind of atom
Explanation:
Element is a pure substance which is composed of similar atoms.It can not be decomposed into simpler constituents using chemical reactions.Example: Aluminium [tex]Al[/tex]
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water [tex]H_2O[/tex]
Thus as aluminium is made up of one kind of atom , it is considered as an element.
