The document discusses which elements would form mainly covalent bonds out of oxygen, potassium, phosphorus, fluorine, hydrogen, and rubidium. It explains that covalent bonds form between two non-metals by sharing electrons, while ionic bonds form between a metal and non-metal by transferring electrons. Phosphorus and hydrogen are identified as non-metals that would form covalent bonds, while ionic bonds form between metals and non-metals when electrons are transferred.

1. which of the following elements would you expect to form mainly covalent bonds? Oxygen,
potassium, phosphorus, fluorine, hydrogen, rubidium (how do you know if an element will have
a covalent or ionic bond?)
Solution
Ionic compound:
The ionic compound which consist ionic bond. The ionic bond is a type of bond which formed
between positive and negative ions or one metal and one non-metal.
Covalent compound:
The covalent compound which consist covalent bond. The covalent bond is a type of bond which
formed by sharing of electrons between atoms. It forms between two non-metals.
P and H are mainly non-metal thus they will form covalent bonds.
If an element is metal then it will from ionic bond. If element is non-metal like H2, N2 then it
will from covalent bond.