How are elements grouped in the periodic table?

Asked By: Somia Rustikov | Last Updated: 27th February, 2020
Category: science chemistry
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The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

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Besides, how are elements arranged on the periodic table?

A table in which the chemical elements are arranged in order of increasing atomic number. Elements with similar properties are arranged in the same column (called a group), and elements with the same number of electron shells are arranged in the same row (called a period).

Similarly, what are the 7 groups of the periodic table? The Elements displayed in each Periodic Table Group are either Gas, Liquid or Solid at room temperature and are classified in groups as: Alkali Metals, Alkaline Earth Metals, Transition Metals, Metalloids, Other Metals, Non-metals, Halogens, Noble Gases and Rare Earth Elements.

Also asked, how are elements classified into groups?

Elements in the same group of the periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.

What are the 8 groups of the periodic table?

The following names for specific groups in the periodic table are in common use:

  • Group 1: alkali metals.
  • Group 2: alkaline earth metals.
  • Group 11: coinage metals (not an IUPAC approved name)
  • Group 15: pnictogens (not an IUPAC approved name)
  • Group 16: chalcogens.
  • Group 17: halogens.
  • Group 18: noble gases.

34 Related Question Answers Found

Why and how elements are arranged in a periodic table?

Elements in the periodic table are arranged in order of increasing atomic (proton) number. Elements in the same group have similar chemical properties because they have the same number of outer electrons (the same valency).

How did they arrange the periodic table?

Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.

Why is it called the periodic table?

The periodic table got its name from the way the elements are arranged in rows which are called periods. The columns of the table are called groups, some of which have specific names, such as the noble gases and the halogens. Going down the periodic table, the number of atomic orbitals increases by one for each row.

Who discovered halogens?


Davy's name for the element prevailed. However, in 1826, the Swedish chemist Baron Jöns Jacob Berzelius proposed the term "halogen" for the elements fluorine, chlorine, and iodine, which produce a sea-salt-like substance when they form a compound with an alkaline metal.

Why are elements grouped in the periodic table?

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

What information is shown on the periodic table?

What information about elements does the periodic table provide? The periodic table tells you the atomic number (which tells you the number of protons and electrons). It also includes the mass number, which is the sum of the protons and neutrons in the nucleus of an atom.

What is atomic mass number?

The mass number (symbol A, from the German word Atomgewicht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. The mass number is different for each different isotope of a chemical element.

Are halogens metals?

The halogens are a series of non-metal elements from group 17 of the periodic table (formerly VII). The halogens include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be considered a halogen.

Are halogens malleable?


They are malleable, which means they can be shaped into sheets, and ductile, which means they can be shaped into wires. They have high melting and boiling points, and all are solids at room temperature, except for mercury (Hg), which is a liquid.

What are Group A elements called?

The elements in group VIIA are called the halogens and the elements in group VIIIA are called the noble gases or the inert gases.

What is Group 4 on the periodic table called?

Group 4 is a group of elements in the periodic table. It contains the elements titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf). The group itself has not acquired a trivial name; it belongs to the broader grouping of the transition metals.

What is Group 7 on the periodic table called?

The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table . Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals.

What is Group 13 on the periodic table called?

Group 13 is sometimes referred to as the boron group, named for the first element in the family. These elements are--not surprisingly--located in column 13 of the periodic table. This group includes boron, aluminum, gallium, indium, thallium, and ununtrium (B, Al, Ga, In, Tl, and Uut, respectively).

What is group A and B in periodic table?

Calcium (Ca) is in group 2, for it contains two valence electrons. In the old IUPAC system the letters A and B were designated to the left (A) and right (B) part of the table, while in the CAS system the letters A and B are designated to main group elements (A) and transition elements (B).

Why are Group 7 called halogens?

Group 7 elements form salts when they react with metals. The term 'halogen' means 'salt former', which is why Group 7 elements are called halogens. The halogens are so reactive that they cannot exist free in nature.