Assertion : Primitive atmosphere was formed by the lightest atoms.
Reason : The primitive atmosphere was reducing in nature.

Primitive atmoshpere was reducing because:

Primitive atmosphere was reducing/oxidising.

Gases found in primitive atmosphere are

The primitive atmosphere was reducing in nature. Free oxygen was absent in the primitive atmosphere.

Assertion : The primitive atmosphere was reducing one i.e., without oxygen. Reason : In the atmosphere, oxygen was involved in forming ozone.

Assertion : The primitive atmosphere was reducing one i.e., without oxygen. Reason : In the atmosphere, oxygen was involved in forming ozone.

Which was not present in primitive atmosphere?

Which was not present in primitive atmosphere?