The bond between Ca and Cl is considered ionic because calcium (Ca) has a tendency to lose two electrons, becoming a Ca2+ ion, while chlorine (Cl) has a tendency to gain one electron, becoming a Cl- ion. This results in an attraction between the oppositely charged ions, forming an ionic bond.
Covalent- but! In the solid PBr5 is present as PBr4+ Br-. (So a mixture) In the vapour it decomposes to PBr3 and Br2.
You haven't stated any bonds, you have just given a list of elements. Those elements can form various compounds, some having ionic bonds and some having covalent bonds. Uranium can also form metallic bonds.
Neither. It is hydrogeneous.
Gallium arsenide (GaAs) is classified as a compound semiconductor with covalent bonding. It forms a covalent bond between the gallium atom and the arsenic atom in its crystal lattice structure.
Neither; it is an elemental metal and not a compound at all.
Nd (neodymium) is an element, so it is neither ionic nor covalent.
Rubidium by itself is neither ionic nor covalent. When it forms bonds with other elements, it forms ionic bonds.
Xe is an inert element that can't be combined in a chemical compound to form neither ionic or covalent bond.
Boron and iodine can form both ionic and covalent compounds. Boron typically forms covalent compounds, while iodine can form both covalent and ionic compounds depending on the specific elements it is bonding with.
Covalent- but! In the solid PBr5 is present as PBr4+ Br-. (So a mixture) In the vapour it decomposes to PBr3 and Br2.
You haven't stated any bonds, you have just given a list of elements. Those elements can form various compounds, some having ionic bonds and some having covalent bonds. Uranium can also form metallic bonds.
Helium, He, is neither covalent or ionic. It is a nobel gas, has a full outer shell 1s2, and has no known compounds
Neither. It is hydrogeneous.
Neither. Sodium chloride is made from ionic bonding.
Neither Radon (Rn) is a element. Onlycompoundscan be ionic or covalent.
Gallium arsenide (GaAs) is classified as a compound semiconductor with covalent bonding. It forms a covalent bond between the gallium atom and the arsenic atom in its crystal lattice structure.
Neither; it is an elemental metal and not a compound at all.