Answer;
- Carbon (C)
- Hydrogen (H)
- Iodine (I)
- Nitrogen (N)
Explanation;
-Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.
-This type of bond is formed between non metals , therefore, since carbon, hydrogen, iodine and nitrogen are all non metals, then they can join with other elements that are non metals to form covalent bond.