Elements in the same family, or group, have similar physical and chemical properties.
Valency
Iodine is the element most similar to astatine. Both elements are in the halogen group on the periodic table, sharing similar chemical properties due to their valence electron configuration. Astatine is a rare and highly radioactive element, making it difficult to study in detail.
This element is selenium.
The element cadmium is above mercury in the periodic table. And above cadmium is the element zinc. They're similar. Use the link below to see the Wikipedia periodic table. It's an interactive table, and each element is a link to the Wikipedia post on that element. Bookmark this table, friends. It's a great homework and reference tool!Those two elements (Cd and Zn) are similar to Hg because they are in the same group/family. Elements that are grouped into families are done so because they are have similar characteristics.
Copper is an element that is in the same family as gold and silver. All of these metals are in the same group on the periodic table. Because of their similarities in structure, these metals have similar properties
The members of this family have similar chemical properties.
To find an element that is similar to another element, look in the periodic table and find an element in the same column (group/family) as the element of interest. Usually, elements within the same group/family have very similar properties.
Valency
A family of elements is a group (column) of the Periodic Table. The family of an element is the column it is in in the Periodic Table. In a family of elements, they all have similar properties. An Example of a Family of Elements;The Alkali Metals - Group 1LithiumSodiumPotassiumRubidiumCaesiumFrancium
The element Bismuth (Bi) belongs to the Nitrogen family (Group 15). This means it has similar characteristics to other elements in this family. Bismuth is atomic number 83 and the last non-radioactive element.
Every element is unique. So, the element Helium isn't the same as any other element(s). It is however similar to other elements in it's family (inert gases).
Element A and element B are the most likely to have similar properties because they belong in the same family, because if you know an element's family you can tell the number of valance electrons and the elements they react with. In periods, the properties are not alike, they slowly change in a pattern.
Iodine is the element most similar to astatine. Both elements are in the halogen group on the periodic table, sharing similar chemical properties due to their valence electron configuration. Astatine is a rare and highly radioactive element, making it difficult to study in detail.
The family element of rhenium is Group 7 (VII), also known as the manganese family or the iron family. Rhenium belongs to this family due to its position in the periodic table and similar chemical properties to other elements in this group, such as manganese, technetium, and bohrium.
I consider that this similar element doesn't exist.
This element is selenium.
The element that would have properties most similar to the new element would be an element that lies in the same group as the new element. Specifically, the element with the most similar properties will lie directly above or below that element in the group.