Take a look at group 7a on the periodic table (halogens). which of the following statements is true regarding fluorine and iodine? question 9 options: f is a gas and i is a solid at room temperature f is a liquid and i is a gas at room temperature both are gases at room temperature both are solids at room temperature

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.