Explain why fluorine and chlorine are in the same group of the periodic table.
give the electronic structures of fluorine and chlorine in your explanation.

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.

im not exactly sure but i think its b!