When was earth formed? What was its conditions at that time?

Explanation

The earth was formed approximately 4.5 billion years ago. The atmosphere of primitive earth was much different from today.s atmosphere. It was thick with water vapour along with compounds released by volcanic eruptions. It was formed of simple compounds of carbon, hydrogen, oxygen and nitrogen such as dicarbon, cyanogen, methane, ammonia and water. All of them existed in gaseous form while water formed superheated steam, Such an atmosphere was called as reducing atmosphere.