What is the correct name for the compound with the formula IF_7?

• A. Iodine hexafluoride
• B. Iodine pentafluoride
• C. Iodine heptafluoride
• D. Iodine tetrafluoride

Answer: (C)

Verified step by step guidance

1. Identify the elements in the compound formula IF_7: Iodine (I) and Fluorine (F).
2. Determine the number of atoms of each element: 1 iodine atom and 7 fluorine atoms.
3. Recall the prefixes used in naming molecular compounds to indicate the number of atoms: 'hepta-' means 7.
4. Combine the element names with the appropriate prefix for fluorine: 'Iodine' + 'hepta' + 'fluoride' to form 'Iodine heptafluoride'.
5. Confirm that the prefix 'hepta-' is used for 7 fluorine atoms, making 'Iodine heptafluoride' the correct name for IF_7.