The elements Oxygen, Sulfur, Selenium, and Tellurium are all found in the same group (16) on the table. These elements are grouped together because they . a
react in similar ways
b
are noble gases
c
are metals
d
have the same atomic mass

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

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.