What does oxygen, carbon and beryllium have in common? At least 5 ?

1. They are all chemical elements on the periodic table.
2. They are all nonmetals.
3. They are all essential elements for life.
4. They all have multiple isotopes.
5. They can all form compounds with other elements.

1. All three elements are non-metals.
2. All three have even atomic numbers, meaning that they have an even number of protons and an even number of neutrons in their nuclei.
3. All three are found in the first three periods of the periodic table.
4. All three are essential for life on Earth. Oxygen is necessary for respiration, carbon is the building block of organic molecules, and beryllium is used in some alloys and electronic devices.
5. All three are found in a variety of compounds. Oxygen is found in water, carbon dioxide, and many other compounds. Carbon is found in hydrocarbons, proteins, and carbohydrates. Beryllium is found in beryllium oxide, beryllium sulfate, and other compounds.