The question is incomplete, here is the complete question:
Which type of atom is expected in the reactants of this chemical reaction?
![4Fe+3O_2\rightarrow 2Fe_2O_3](https://img.qammunity.org/2019/formulas/chemistry/middle-school/pa8zmr18eh70tsph5hu6s1k0bhoh6p1otn.png)
A. Iron (Fe)
B. Gold (Au)
C. Nitrogen (N)
D. Chlorine (Cl)
Answer: The atom which is expected as the reactant in the given chemical reaction is iron (Fe)
Step-by-step explanation:
In a chemical equation, the chemical species are termed as reactants or products.
- Reactants are defined as the species which react in the reaction and are written on the left side of the reaction arrow.
- Products are defined as the species which are produced in the reaction and are written on the right side of the reaction arrow.
For the given chemical reaction:
![4Fe+3O_2\rightarrow 2Fe_2O_3](https://img.qammunity.org/2019/formulas/chemistry/middle-school/pa8zmr18eh70tsph5hu6s1k0bhoh6p1otn.png)
The reactants to the given chemical reaction are iron (Fe) metal and oxygen gas
![(O_2)](https://img.qammunity.org/2019/formulas/chemistry/high-school/4rt1vc2ylwj83ajj16rvmz0ehhwaa3cqqd.png)
The products to the given chemical reaction is iron (III) oxide
![(Fe_2O_3)](https://img.qammunity.org/2019/formulas/chemistry/middle-school/tqw3eqsiqrdq15dhrqx2ui9ly9l5g5f0ok.png)
Hence, the atom which is expected as the reactant in the given chemical reaction is iron (Fe)