What is the oxidation number of phosphorus (p) in phosphoric acid (h3po4)? -7 +1 +5 +7

Hey there!:

H is always +1 so the H's have a +3 charge.

O is always -2 so the O's have a -8 charge .

Now, suppose oxidation state for P = X , then :

+3  + X + (-8) = 0      (because of neutral molecule)

x = 8 - 3

x = + 5

So, X = +5 oxidation state.

Answer  C

Hope that helps!

answer; ///i do believe that the correct answer is (b); ///particle composed of two or more atoms bonded together;