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Why do elements have groups?

Why do elements have groups?

Answer Expert Verified. Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell. Elements in the same period have different properties because the number of valence electrons in their outermost shells differ.

How are the elements grouped together?

A modern periodic table arranges the elements in increasing order of their atomic numbers and groups atoms with similar properties in the same vertical column (Figure 2). The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.

How are elements grouped into families quizlet?

Elements can be grouped into families. The elements in each family have the same number of valence electrons. As a result, they have similar chemical properties. What group of elements is the least reactive?

Are elements in the same group family?

For the most part, element families and element groups are the same things. Both describe elements that share common properties, usually based on the number of valence electrons. Usually, either family or group refers to one or more columns of the periodic table.

What is the only element on the periodic table that has a family of its own?

Hydrogen is a very special element of the periodic table and doesn’t belong to any family. While hydrogen sits in Group I, it is NOT an alkali metal.

Why are elements grouped into the same family?

An element family is a set of elements sharing common properties. Elements are classified into families because the three main categories of elements (metals, nonmetals , and semimetals) are very broad. The characteristics of the elements in these families are determined primarily by the number of electrons in the outer energy shell.

How does the periodic table organize the elements?

In the modern periodic table, elements are organized by atomic number. The atomic number is the number of protons in an atom of an element. This number is unique for each element, so it seems like an obvious way to organize the elements.

How many groups are in the periodic table of elements?

There are 18 groups in the standard periodic table. Each group has a number: from 1 to 18. Elements in a group have electrons arranged in similar ways, according to the number of valency electrons, which gives them similar chemical properties (they behave in similar ways).

How are the elements in a group or family alike?

The columns of the table represent groups, or families, of elements. The elements in a group often look and behave similarly , because they have the same number of electrons in their outermost shell – the face they show to the world.