Generally speaking yes; it breaks down a bit in the middle-right area, because as you go down the table the metallic character tends to become more pronounced, and (for example) bismuth and nitrogen are pretty dissimilar.
Yes they do.
The vertical elements are called groups. They have similar chemical properties.
Na (sodium) belongs to the first group (vertical row) in the periodic table, all of the other elements in this group (row) have similar characteristics to each other. In general, each group has similar characteristics.
Elements that have many similar properties belong to the same group on the periodic table. Each group shares similar chemical characteristics due to their same outer electron configuration.
The periodic table is organized by increasing atomic number and grouping elements with similar chemical properties in columns called "groups" or "families." Elements within the same group have similar outer electron configurations, which results in similar chemical behavior.
Elements in each group on the periodic table have similar properties due to their similar electron configurations. These properties include similar reactivity, chemical behavior, and physical characteristics. This allows for elements within the same group to be grouped together based on their shared properties and patterns.
Sulfur, selenium, and tellurium are elements that would have similar properties to oxygen due to their placement in the same group on the periodic table (Group 16 or chalcogens). They share similar chemical reactivity and bonding characteristics.
Elements in a same group have same number of valence electrons and hence similar physical and chemical properties.
I expect elements with similar properties in the periodic table to be most similar. For example, elements in the same group or period tend to have similar chemical characteristics due to their similar electron configurations.
All the elements in the same group as Flourine have similar properties. This group of elements is referred to as the halogens, and is located in group 7.
Is the same thing as a family and a family is a vertical column in the periodic table. Elements in a family all share similar characteristics, whether they be physical or chemical. There are 18 family (or group) columns in the periodic table.
A lot of people noticed similar trends, but it took Dmitri Mendeleev to organise them by increasing atomic number and group them by similar characteristics.