What forms from the complete combustion of a hydrocarbon?

Complete combustion of a hydrocarbon occurs in the presence of excess amount of oxygen. When oxygen is combined with fuels, the product formed are carbondioxode, water and heat energy.

Explanation:

There are two types of combustion i. e. complete combustion and incomplete combustion. Complete combustion occurs when excess amount of oxygen is present while incomplete combustion occur when oxygen is in limited quantity.

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.

2b2t

explanation:

2b2t