The correct answer is option 3. The IUPAC name is Iron(II) sulfide. It is the less stable amorphous form. When this is powdered, it is pyrophoric or it ignites spontaneously in air. It readily reacts with hydrochloric acid producing hydrogen sulfide.
Answer:
clf3
Explanation:
it occupied more than 8 valence electrons
only eukaryotes can perform cellular respiration. More specifically, the two types of organisms that can do this are autotrophs and heterotrophs.
Examples of heterotrophs: animals, fungi, the majority of bacteria, ...
Examples of autotrophs: grass, algae, a few bacteria, ...