Yes - too many to name - but potassium permanganate would be one and Manganese dioxide another.
no, it does not exist
Nitrogen in any pure form is an element, not a compound. However, at standard temperature and pressure, nitrogen exists predominantly as divalent molecules.
Elements of group 18 are least reactive.These are noble gases.They are unlikely to have a reaction with any element or compound.
considering it only contains iron (Fe) and chlorine (Cl), none.
A bismuthide is any compound of bismuth with a more electropositive element.
Carbon is not made form any compound. It is an element composed only of carbon atoms.
It is a compound, not an element. N4Se4 is tetranitrogen tetraselenide
we can combine any other element or even an compound witw it like hydrogen+oxygen=water
no, it does not exist
Since manganese is a metallic element, its oxidation number in metallic form is 0, as for any other element.
NO!!!! He (Helium) is monatomic gas, that is it exists as single atoms, and does NOT combine with any other substance to form a compound. 'He' is the most inert element of all. It alsao has the lowest condensing point 4K4 (-269 oC) and freezing point at 2K (-271oC).
A term used to describe any element or compound is called a substance or substances.
Nitrogen in any pure form is an element, not a compound. However, at standard temperature and pressure, nitrogen exists predominantly as divalent molecules.
An atom is the purest form of any element, and a molecule occurs when atoms from different elements join together to form a new compound.
Bar of gold is an element. symbol of gold is Au.
Sodium isn't any kind of compound. It is an element.
H2 is an element as it does not include any other elements from the Periodic Table.