The group number is an identifier used to describe the column of the standard periodic table in which the element appears. Answer. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements. Periodic table, in full periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus. Groups 1-2 termed s-block elements. 2013-05-12 04:49:42 2013-05-12 04:49:42. Periods in the periodic table In each period (horizontal row), the atomic numbers increase from left […] In the periodic table of elements, there are seven horizontal rows of elements called periods. This is what is meant by periodicity or periodic table trends. There are 18 groups in the modern setting of periodic table. The dividing line between these two categories of elements is in the shape of a _____ staircase. The periodic table is essentially divided into two types or categories of elements. 0 1 2. The vertical columns of elements are called groups, or families. What is the group 18 of the periodic table? The periodic table is organized in rows called periods.Periodic means Repeating Pattern. There are 18 groups in periodic table.A column is known as a group in periodic table. Asked by Wiki User. They are also called families. A. Coinage metals B. Alkali metals C. Halogens D. Noble gases Wiki User Answered . There are multiple ways of grouping the elements, but they are commonly divided into metals, semimetals (metalloids), and nonmetals. The elements that border or touch this dividing line are referred to as _____ metalloids. You'll find more specific groups, like transition metals, rare earths , alkali metals, alkaline earth, halogens, and noble gasses. Top Answer. The most common way the periodic table is classified by metals, nonmetals, and metalloids. Those categories are _____ and _____ metal, non-metals. What is group 18 of the periodic table called A. metals B. Nonmetals C metalloids D Noble gases

what is group 18 of the periodic table called?

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