Select the element(s) that will have ONE unpaired electron in the p orbital. Ca

N

B

Ar

Br

The element B will have ONE unpaired electron in the p orbital.

Explanation:

The electronic configuration of each given element is as follows.

Atomic number of calcium (Ca) is 20.

Ca:

Atomic number of nitrogen (N) is 7.

N:

Atomic number of boron (B) is 5.

B:

Atomic number of argon (Ar) is 18.

Ar:

Atomic number of bromine (Br) is 35.

Br:

Therefore, boron is the only element that have one unpaired electron in the p-orbital.

Thus, we can conclude that element B will have ONE unpaired electron in the p orbital.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.