<span>F can only have oxidation number of -1
The overall compound has an oxidation number of -1
You have 6 Fs, so 6(-1) = -6
charge from F
X = oxidation number of P
x + (-6) = -1
solve for
x = +5</span>
Answer: No.
Explanation: A negative integer can only be made with 2 negative integers or 1 positive and 1 negative integer.