What is systematic name of the formula Fe(NO3)2
A. Iron(II) nitrate
B. Iron(II) nitrite
C. Iron (III) nitrite
D. Iron (III) nitrate
The Correct Answer and Explanation is :
The correct answer is A. Iron(II) nitrate.
Iron(II) nitrate is a chemical compound with the formula Fe(NO3)2. This name is derived from the systematic naming of chemical compounds that involves indicating the oxidation state of the metal in the compound. In this case, the iron in Fe(NO3)2 has an oxidation state of +2. This is represented by the (II) in the name “Iron(II) nitrate.”
To further break it down:
- Iron (Fe): This is the metallic element present in the compound. Iron can exist in multiple oxidation states, but in this compound, it is in the +2 oxidation state, as indicated by the (II) in the name.
- Nitrate (NO3): This is the anion part of the compound. Each nitrate ion carries a charge of -1. Since there are two nitrate ions in the formula, the total negative charge from the nitrates is -2.
- Balancing Charges: The +2 charge of the iron cation balances with the -2 total charge from the two nitrate anions, making the compound neutral overall.
The systematic naming convention is crucial for clearly communicating the specific chemical species involved in a reaction or a study. It helps avoid confusion that might arise from common names or different naming standards. The use of roman numerals to denote the oxidation state of the metal is particularly helpful in distinguishing between compounds that contain the same elements but in different oxidation states, which can have significantly different chemical properties.
For the other options:
- B. Iron(II) nitrite and C. Iron (III) nitrite involve nitrite (NO2) instead of nitrate (NO3), which is a different anion with different properties.
- D. Iron (III) nitrate would have a formula of Fe(NO3)3, as iron would be in the +3 oxidation state, requiring three nitrate ions to balance the charge.
Here’s an image generation for better visualization:
{
"prompt": "A detailed illustration of a molecular structure of Iron(II) nitrate. The image shows iron atoms depicted as larger spheres and nitrate groups as clusters of smaller spheres connected by lines, representing bonds. The iron atoms are in the center, coordinated by nitrate groups around them, clearly showing the charge balance and atomic connectivity. Use a clear and educational style suitable for a chemistry textbook.",
"size": "1024x1024"
}