What are the Chemical Reaction of Boron.Boron Hydride formation properties and Structures.What are the Physical properties of Alkenes?.What are the three classification of hydrocarbons?.How do you find the intermediates in a reaction?.What is Hyperconjugation and inductive effect?.What is a Dash structural formula give an example?.What are the properties of cathode rays?.What is difference between electron proton and neutron?.What are the characteristics of the alkaline earth metals?.What is the physical properties of alkali metals?.What is the Electronic configuration of iron and iron ions.Bohr's Atomic Model And Its Limitations.Distinguishing Tests For Organic Compounds.Properties and Molecular Structure of Oxygen.Nucleophilicity and basicity difference.what is stability order of carbocations.Explain all chemical Test for alcohol and phenols.what are the list of tests for Aldehydes and Ketones.How shapes of molecules are related to the type of hybridization.How Ionic bond forms ? What are the properties.What are the characteristics of long form of periodic table? pdf It does not reflect the exact distribution of electrons among all the orbitals of the atoms of all the element. Position of lanthanides and actinides has not been given inside the table.Ĥ. Position of helium is not fully justified as its EC justifies it to be included in the s – block.ģ. Position of Hydrogen is not fixed till nowĢ. It removes the anomalies of Mandeleev’s periodic table i.e., K 39 precides Ar 40.ġ. This arrangement of elements is easy to remember and reproduce.ĩ. The greatest advantage of this periodic table is that this can be divided into four blocks namely s,p,d and f-blocks elements.Ĩ. Periodicity in properties can be easily visualized.ħ. The completion of each period is more logical.Ħ. It correlates the position of elements with their electronic configuration clearly.ĥ. Due to separation of two sub groups, dissimilar elements do not fall together.Ĥ. It completely separates metals and non – metals.ģ. atomic number and electronic configuration.Ģ. It is based on more fundamental property i.e. Incomplete, it can accommodate upto 32 elementsĪdvantage of Long form of Periodic Table:ġ. Physics Wallah Chemistry Doubts page consist of more questions for reference. Table : Period and Energy Levels in Periodic Table Lanthanides (4f-series) and actinides (5f-series) are placed in two separate rows below the main periodic table to avoid unnecessary side wise expansion of the periodic table. These elements are also known as f-block elements or inner-transition elements.ħ. Elements with atomic number 58 to 71 are called lanthanides whereas the elements with atomic number 90 to 103 are called actinides. The element of group 3 to 12 are called transition elements.Ħ. These are also called as representative or normal elements.ĥ. The elements of group 1, 2 & 13 to 17 are called main group elements. G) Seventh period : It is an incomplete period which has 29 – elements, Fr to Uuo.Ĥ. This is called long period.į) Sixth period : It has 32 elements, Cs to Kr. The elements of this period are also known as typical elements.ĭ) Fourth period : It contains 18 elements, K to Kr and this is called long period.Į) Fifth period : It has also 18 elements, Rb to Xe. The elements of second period are also known as bridge elements.Ĭ) Third period :It also contains 8 elements i.e. It is called shortest periodī) Second period : It contains eight elements e. i.e.,Ī) First period : It contains two elements i.e., H & He. The 7 horizontal rows or columns of long form of periodic table are called periods. Elements of group 11 are called coinage metals.ģ. Elements of group 18 are called noble gases. Elements of group 17 are called halogensį. Elements of group 16 are called chalcogensĮ. Elements of group 15 are called pnicogensĭ. Elements of group 2 are called alkaline earth metalsĬ. Elements of group 1 are called alkali metals.ī. The 18 vertical columns of long form of periodic table, are called groups.Ī. General Characteristics of Long form Periodic Table:ġ. What are the characteristics of long form of periodic table?
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