What trend in atomic radius occurs down a group on the periodic table? What causes the trend? ⊂(◉‿◉)つ༼☯﹏☯༽(⊃‿⊂)(つ◉益◉)つമ◡മ┗(＾0＾)┓( っ^_^)っo(￣ ◇￣)○⊂（♡⌂♡）⊃(っಠ‿ಠ)っ

Explanation:

the further down the group you go, the larger the radius becomes. its caused by the amount of electrons needed to equal out the charge of the nucleus

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.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.