WHY ARE THE COLUMNS OF THE PERIODIC TABLE importanmt?

Answer 1

They show the groups of elements. Here's an explanation from Wikipedia:

A group, also known as a family, is a vertical column in the periodic table of the elements.
Groups are considered the most important method of classifying the elements. In some groups, the elements have very similar properties and exhibit a clear trend in properties down the group — these groups tend to be given trivial (non-scientific) names, e.g. the alkali metals, alkaline earth metals, halogens and noble gases. Some other groups in the periodic table display fewer similarities and/or vertical trends (for example Groups 14 and 15), and these have no trivial names and are referred to simply by their group numbers. Modern quantum mechanical theories of atomic structure explain group trends by proposing that elements within the same group have the same electron configurations in their valence shell, which is the most important factor in accounting for their similar properties.

Answer 2

The columns of a periodic table are called, Groups. This arrangement denotes the number of electrons in the outer shell.

This means, as you go from left to right, you fill up the innermost shells and it helps determine the reactivity of the element.

Answer 3

elements are placed in the columns and rows on the table for a reason. They share properties with every other element in that row or column. For the columns, it also helps to identify how many valence electrons each element has and which orbital its last electron is in. That's why Helium is in both the first and last columns. It only has electrons in the first (1S) orbital, but it also fills up the 1S orbital, making it a stable element, like the rest of the Noble gases.

Answer 4

Things that are in the same column in the periodic table react like each other. Carbon and silicon both prefer to form four covalent bonds. Sodium and Potassium both prefer to form a monocation.

Answer 5

The colums on the Periodic table are important because they have the same Number of electrons in the outer shell. The rows have the same number of Shells in the outer shells so..

Answer 6

the columns are important b/c the tell you how may valence electrons are in the elements listed under it ( note: this is not always true transition metals)

Answer 7

they represent how many electrons are in the outer electron layer

Answer 8

that shows what group they are in which shows the electrons