What is the name of the molecular compound CBr4? Enter the name of the compound.
What is the name of the molecular compound N2O5? Enter the name of the compound.
What is the name of the molecular compound SeF6? Enter the name of the compound.
The Correct Answer and Explanation is :
Here are the correct names of the given molecular compounds:
- CBr₄: Carbon tetrabromide
- N₂O₅: Dinitrogen pentoxide
- SeF₆: Selenium hexafluoride
Explanation:
Naming molecular compounds follows the rules for covalent (non-metal to non-metal) compounds, which are governed by prefixes to indicate the number of atoms of each element in the molecule. These prefixes come from Greek numbers.
General Rules for Naming Molecular Compounds:
- First element: The full name of the element is used. A prefix is added only if there is more than one atom of this element.
- Second element: The name is derived by using the root of the element’s name and adding the suffix
-ide. A prefix is always added, even if there is only one atom of this element. - Prefixes:
- 1: Mono- (only used for the second element)
- 2: Di-
- 3: Tri-
- 4: Tetra-
- 5: Penta-
- 6: Hexa-
- 7: Hepta-
- 8: Octa-
- 9: Nona-
- 10: Deca-
Names Explained:
- CBr₄:
- The first element is carbon, and no prefix is needed since there is only one atom.
- The second element, bromine, gets the prefix “tetra-” (for 4 atoms) and the suffix “-ide.”
- Result: Carbon tetrabromide.
- N₂O₅:
- The first element is nitrogen, with the prefix “di-” (for 2 atoms).
- The second element is oxygen, with the prefix “penta-” (for 5 atoms) and the suffix “-ide.”
- Result: Dinitrogen pentoxide.
- SeF₆:
- The first element is selenium, with no prefix since there is only one atom.
- The second element is fluorine, with the prefix “hexa-” (for 6 atoms) and the suffix “-ide.”
- Result: Selenium hexafluoride.
This systematic naming ensures clarity and consistency in molecular compound identification.