n-heptane
An element.
an element
By definition, an Element contains only one kind of atom - atoms of that element. If it has more than one kind, it is a compound, not an element.
Carbon
No Element Has that kind of Configuration
mercury
That would be radioactive decay.
An atom is the smallest piece of an element that can be identified as that element.
An element.
what kind of question are that?
atom
an element
By definition, an Element contains only one kind of atom - atoms of that element. If it has more than one kind, it is a compound, not an element.
diatomic
nonmetal
a metal
no it is not