You are watching: Representative elements on the periodic table
The long form of the periodic table is composed of 4 blocks:
This classification is based on the presence of valence electrons at a certain power level. The s-block elements and p-block facets are also known as representative elements. The noble gases inserted in the 18th group the the periodic table are not part of representative elements.
The representative aspects have completely filled inside orbitals and incomplete outer orbitals or valence shells. This why they often tend to obtain the nearest noble gas construction either by transport or share of an electron with other atoms.
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The aspects in the periodic table are arranged into four blocks: s, p, d, and f. The elements present in s- and p-blocks are collectively known as representative facets or main group elements.
These elements have filled inner orbitals and incomplete outermost orbitals or valence shells. All non-metals and a few metals are component of the representative elements or main group elements.
The noble gas aspects placed in the 18th group of the long form of the periodic table are not component of the representative aspects because they have filled valence shells and they do not tend to share or deliver electrons because that the link formation.
All these aspects tend to type either a covalent link or an ionic bond. The ionic bonds result by the complete move of electrons, whereas covalent bonds are created by same sharing the electrons between the bonded atoms.
Following is a perform of the representative elements:
Group 1 (s-block element):
Group 1 facets are also called together alkali metals because their oxides form an alkaline solution. They are metallic and tend come form an ionic bond by ns of 1 valence electron. Lithium, sodium, potassium, rubidium, and cesium are considered alkali metals.
Group 2 (s-block elements):
Group 2 elements are also called alkaline earth metals together their oxides type alkaline solution and are mainly uncovered in the Earth's crust. They are metallic and also tend to form an ionic shortcut by ns of 2 valence electrons. Alkaline planet metals room beryllium, magnesium, calcium, strontium, and barium.
Group 13 (p-block elements):
Group 13 facets are metallic aspects with several of the metalloids. Metalloids room the aspects with intermediate properties of metal and non-metal. In this group, boron is a metalloid whereas every other elements are metals.
Group 14 (p-block elements):
Group 14 aspects are a mixture the non-metallic and metallic aspects with several of the metalloids. C is the only non-metal the this team with Si and also Ge being metalloids. Other elements (Pb and also Sn) are metallic facets of this group. They have 4 valence electrons and tend to expropriate 4 electron to get octet.
Group 15 (p-block elements):
Group 15 elements are a mixture of non-metallic and metallic elements along with some metalloids. Nitrogen and Phosphorous are non-metals of this group. Arsenic and antimony are metalloids. Bismuth is a metallic facet of this group. They have actually 5 valence electrons and tend to accept 3 electron to complete their octet.
Group 16 (p-block elements):
Group 16 consists of non-metals, metals, and metalloids. Oxygen, sulfur, and selenium are non-metals of this group. Tellurium is a metalloid. Polonium is a metallic element of this group. They have actually 6 valence electrons and tend to accept 2 electrons to complete their octet.
Group 17 (p-block elements):
All the elements present in group 17 are non-metals. These elements are likewise called halogens and have 7 electrons in their valence shell. These facets complete your octet by acquiring or sharing one electron. Elements of group 17 space fluorine, chlorine, bromine, iodine, and astatine.
Group 1 and group 2 elements are metals and mostly form an ionic bond. They are good conductors of heat and electricity. They type basic oxides which are usually colorless and also soluble in water.
Group 1 and group 2 elements are extremely reactive. Hence, they react violently with water and oxygen.
Group 1 and also group 2 elements exist in solid state.
Group 13 come group 17 elements are a combination the metals, metalloid, and non-metals. They form an ionic shortcut with metals and a covalent bond with various other non-metals.
Most the the non-metals exist in gas state, but some are additionally solid and also liquid.