A mixture of iron fillings and sulphur is heated in a test tube give the name of the compound formed.
write the chemical equation of the reaction which took place
method of preventing iron from rusting​

Explanation:

When the iron filling is heated with sulphur, a compound called iron sulphide is formed. The compound formed by heating iron filling with sulphur powder is iron sulphide. Therefore the answer is iron sulphide, FeS.

Explanation:

When the iron filling is heated with sulphur,iron sulphide is formed. The equation of the reaction that took place is;

Fe + S → FeS (heat).

The rusting of iron can be prevented by painting, oiling, greasing or varnishing its surface and galvanizing

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa