Salt.
None. helium doesnt form compounds.
All metals can form chemical compounds.
Can iron form other compounds
By chemical reactions they form other compounds.
Neon does not form any compounds.
Every type of atom can form compounds.
Nonmetals burning in oxygen form covalent type compounds, as compared to metals which form ionic compounds.
Helium does not form compounds.
neon does not form compounds
krypton will form compounds like KrF2. Xenon will form compounds like XeF4, XeF6 etc.
Yes They do They all form compounds with Hydrogen
No. Elements are not made of compounds. Elements may be combined to form compounds.