Which subscript should be written to the right of the symbol for fluorine in the compound dinitrogen tetrafluoride?

To know the subscript when writing the chemical formula, take note of the prefixes in the chemical name. In this example, di-means 2 and tetra - means 4. That means, the compound consist of 2 nitrogen atoms and 4 fluorine atoms. That is written as N₂F₄. Thus, the subscript is 4.