Answer:
C and D
Explanation:
A. Hydrogen has a total of two electron shells.
It is false because hydrogen has only one electron and maximum electron in first valence shell is two. Therefore, Β it has only one electron shell.Hence, option is false.
B.If one hydrogen atom bonds to one oxygen atom , both atoms have full valence shells.
It is false, because hydrogen required one electron for filling Β its valence shell but oxygen required two electrons for filling its valence shell . The electrons in a bond are two. Therefore, if one hydrogen atom bond with one oxygen atom then the valence shell of oxygen is incomplete .Hence, option B is false.
C.When hydrogen has two electrons in its valence shell , it has a full valence shell.
It is true because hydrogen has only one shell and it required two electrons for fillings its valence shell.Hence, option C is true.
D.Hydrogen Β can bond with oxygen to make water.
Yes , hydrogen can bond with oxygen to make water because the chemical formula of water is [tex]H_2O[/tex].Two hydrogen atom and one oxygen required to make water. Hence. it is true.
Answer: C and D
