Helium and the hydrogen atoms of elements form bonds without satisfying the octet rule, therefore the correct option is D.
What is a Chemical compound?
The chemical compound is a combination of two or more either similar or dissimilar chemical elements, for example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.
These chemical compounds are formed because of different types of bonds between the constituents' elements, the chemical bonds are mainly ionic bonds, covalent bonds,s, and hydrogen bonds.
Generally, most of the elements from the periodic table follow the octet rule while forming the bond with the other elements which is to complete their outermost shell with eight electrons while forming the bond with the other element but helium and hydrogen are exceptions to this octet rule because they do not need 8 electrons to complete their valence shell while forming the bond with some other element.
Hence, we can say that Helium and the hydrogen atoms of elements form bonds without satisfying the octet rule, therefore the correct option is D.
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