Phosphorus trichloride gas is obtained by the reaction of chlorine gas and solid phosphorus . write a balanced chemical equation for this reaction.

The answer is:

2P + 3Cl2 +Heat °c→ 2PCl3

The explanation:

when the chemical formula of the phosphorus is (P) and the chemical formula of the chlorine (Cl) and the phosphorus trichloride chemical formula is PbCl3

So, the chemical equation is:

P + Cl2 +Heat °c→ PCl3

but this is not a balanced chemical equation so, we will start to balance it:

we have 3 atoms of Cl on the right side and 2 atoms on the left side so, we need to make them equal on both sides.

so we will but 3 on the left side it will become 3Cl2 instead of Cl2

then will put 2 on the right side, it will become 2pCl3

now the atoms number of Cl are equal on both sides, but we need to make p atoms equal too. so, we will put 2 on the left side so, it will be :

2P + 3Cl2 +Heat °c → 2PCl3

and this is the final balanced equation for the reaction.

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.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence