Ferric ion reacts with sulfide according to the reaction: 2fe₃ + 3s₂ - -> fe₂s₃(s) an iron solution is made by dissolving 1.25 g of ferric sulfate, fe₂(so₄)₃.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

to improve her experimental investigation, dalila should add a row in which no fertilizer is used. by a having a contrasting row in which no fertilizer is used, she will have a control group that will her understand the effects of the fertilizer in the plant developments vs the development of the plant when no fertilizer is used.

solar electric energy