Chlorine is a chemical element.
Yes, sodium chloride is a compound, a salt - NaCl.
No, the chloride ion is a single elemental ion, Cl-.
CI does not exist. Cl (with a lowercase L) is the element chlorine
The compound CrO is chromium(II) oxide, containing chromium and oxygen ions. BaF2 is barium fluoride, consisting of barium and fluoride ions. Cl is a single Cl atom of chlorine. So, CrO and BaF2 are compounds, while Cl is an element.
By definition, it will always be an element, never a compound.
PCl3 is a chemical compound. It is made of elements P and Cl.
The compound XCl is made up of the elements X (representing an unknown element) and chlorine (Cl). The subscript indicates that there is one atom of X bonding with one atom of chlorine in the compound.
HCl is a compound composed of one hydrogen atom (H) and one chlorine atom (Cl). Since it is a compound and not a single element, it does not have a unique number on the periodic table. Hydrogen is listed as element number 1, and chlorine is element number 17.
Sulfure is not an element and not an atom; sulfur is compound (a salt).
In the compound NaCl, there is a total of 2 atoms: 1 sodium atom (Na) and 1 chlorine atom (Cl).
It isn't a element, as an element is one atom. It would be a compound if the elements chemically combined, but if they didn't, its a misture
Carbon is an element