How does ozone form in the troposphere?

Ozone present in the troposphere is also called as bad ozone. It is also a  

green house gas. It is the major constituent of the urban smog. It forms in the same way as ozone in stratosphere.

after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

hope this

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds