How to read the periodic table
The periodical arrangement of elements are shown in periodic table. The elements having the similar properties are arranged together in groups. They are arranged according to their atomic number because the physical properties and chemical properties are periodic function of the atomic number of elements.
The similarity in nature is due to the same valence shell electronic configuration as the electrons of inner shell does not take part in any chemical change while only the electrons of outer valence shell are contributed in any chemical change. Please express your views of this topic Electron Dot Formula by commenting on blog.
So if any element possess same arrangement of valence shell electrons then they have the same physical and chemical properties. So they are arranged in same group in this table.
Thus if we answer the question that what is Periodic about the Periodic Table, then we can say this is the arrangement of elements having similar properties and this arrangement is repeated after a regular interval.
If we take the example of alkali metals, they all have same properties. If we check their electronic configuration, then the valence shell electronic configuration of all the alkali metals is same. This similarity of valence shell electronic configuration is repeated after regular interval with increasing the atomic number.
Now the main question arises that How to Read the Periodic Table. When we start Reading Periodic Table, we should know some important concepts related to this.
As we know that any element is written in this table with its symbol. The symbol can be written with atomic number or the valence shell electronic configuration or with mass number or with the full name of element.
It depends on the different form of table. Some table contain element symbol with atomic number and the valence shell electronic configuration while some are made with full name of element with mass number and atomic number. As we know that the atomic number is equal to the number of protons presence in the nucleus of an atom.
In any atom, the number of protons and number of electrons are equal, so we can define the atomic number as number of electrons also. It is written as Z. Similar the mass number is expressed by A.
It is equal to the sum of number of neutrons and number of protons. When we write any element with its symbol then the atomic number is written as subscript on left side of the symbol of element and the mass number is written as superscript on the left side. Is this topic Alkene Stability hard for you? Watch out for my coming posts.
The valence shell electronic configuration is the arrangement of outer shell electrons. For example the valence shell configuration of carbon is 2s2 2p2. When we are Reading the Periodic Table, we first know about the symbol of element.
Reading a Periodic Table can be explained by taking a example. Like if a elements is written as 21Sc 3d1 4s2 , now we know that this is symbol of scandium which has electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d1 , so the atomic number of scandium is 21 and outer shell electronic configuration is 4s2 3d1 .
The similarity in nature is due to the same valence shell electronic configuration as the electrons of inner shell does not take part in any chemical change while only the electrons of outer valence shell are contributed in any chemical change. Please express your views of this topic Electron Dot Formula by commenting on blog.
So if any element possess same arrangement of valence shell electrons then they have the same physical and chemical properties. So they are arranged in same group in this table.
Thus if we answer the question that what is Periodic about the Periodic Table, then we can say this is the arrangement of elements having similar properties and this arrangement is repeated after a regular interval.
If we take the example of alkali metals, they all have same properties. If we check their electronic configuration, then the valence shell electronic configuration of all the alkali metals is same. This similarity of valence shell electronic configuration is repeated after regular interval with increasing the atomic number.
Now the main question arises that How to Read the Periodic Table. When we start Reading Periodic Table, we should know some important concepts related to this.
As we know that any element is written in this table with its symbol. The symbol can be written with atomic number or the valence shell electronic configuration or with mass number or with the full name of element.
It depends on the different form of table. Some table contain element symbol with atomic number and the valence shell electronic configuration while some are made with full name of element with mass number and atomic number. As we know that the atomic number is equal to the number of protons presence in the nucleus of an atom.
In any atom, the number of protons and number of electrons are equal, so we can define the atomic number as number of electrons also. It is written as Z. Similar the mass number is expressed by A.
It is equal to the sum of number of neutrons and number of protons. When we write any element with its symbol then the atomic number is written as subscript on left side of the symbol of element and the mass number is written as superscript on the left side. Is this topic Alkene Stability hard for you? Watch out for my coming posts.
The valence shell electronic configuration is the arrangement of outer shell electrons. For example the valence shell configuration of carbon is 2s2 2p2. When we are Reading the Periodic Table, we first know about the symbol of element.
Reading a Periodic Table can be explained by taking a example. Like if a elements is written as 21Sc 3d1 4s2 , now we know that this is symbol of scandium which has electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d1 , so the atomic number of scandium is 21 and outer shell electronic configuration is 4s2 3d1 .