Which set of elements has physical and chemical properties similar to phosphorus? Aluminum, silicon, sulfur, & chlorine, , ,

Carbon, selenium, iodine, & radon

Oxygen, germanium, indium & mercury

Nitrogen, arsenic, antimony & bismuth

Nitrogen, arsenic, antimony & bismuth

Explanation:

Phosphorus belongs to the 15th group, that is nitrogen family.

Natures are decided by the number of valence electrons.

In a family, all elements have same outer electronic configuration or you say number of electrons.

General electronic con.: ns²np³

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

a) the particles of the chair are strongly held together.