Carbon, nitrogen, and oxygen are among the most abundant elements afeter H and He.

In our solar system, the atoms of these elements are found primarily in the molecules CH4, NH3, and H2O.

Explain why you suppose this is.

我的回答是这样的:

因为最强的分子力是共价建(?),而具有共价特性最小的原子就是C,O,N. 所以容易形成小分子CH4, NH3, H2O.

不知道我这样的回答可否?