They are called artificial chemical elements.
Synthetic is the term you are looking for i believe.
Elements that are made in a laboratory are typically referred to as synthetic elements. These elements are not found naturally on Earth and are produced by scientists through various experimental methods. Examples of synthetic elements include einsteinium and seaborgium.
Radioactive elements.
synthetic
Period is the term used in the periodic table to describe each horizontal row of elements.
Metal is a general term for the meatallic elements and alloys made of them.
When two of the same elements are bonded together, it is called a diatomic molecule.
The term used in Groups. It is sometimes called Family.
The term used is group. It is also called family.
A bioprosthetic is another term for a bioprosthesis - a prosthesis made from biological, rather than synthetic material.
The another term used is Families. The vertical columns are referred as groups or families.
Lacework refers to a decorative fabric made by weaving threads in intricate patterns, traditionally created from cotton, silk, or linen. However, synthetic lace, made from materials like polyester or nylon, is also widely available and popular for its durability and ease of care. So, while lace can be made from synthetic materials, it is not exclusively synthetic. The term "lacework" can apply to both natural and synthetic lace designs.