Hydrogen is the first element in the periodic table. TRUE/FALSE Medium Published on 21st 08, 2020 So, it belongs to the first group and the first period of the periodic table. For example, hydrogen reacts with halogens, oxygen, and sulphur to form compounds whose formulae are similar to those of alkali metals. Justify the statement. Justify the statement. However, the properties of hydrogen differ significantly from those of the other elements in Group 1. Thanks for the A2A. Recent arguments in favor of placing hydrogen either separately at the top of the table or as a member of the carbon family are shown to have serious defects. Hydrogen Hydrogen is one of the three most abundant elements present on Earth. Hydrogen and alkali metals have similar outer electronic configuration as both have one electron in their outermost shell. Thus, hydrogen was put at the top of the periodic table so that the symmetry of the modern periodic table is not disturbed. Hydrogen 1s 1. There are seven such periods in the table, each numbered from 1 to 7. H + 1) Electronic configuration : Like alkali metals, hydrogen also contains 1 electron in its outermost shell. See that purple ‘He’ at the top right corner? why is position assigned to hydrogen in the modern periodic table considered anomalous - - TopperLearning.com | 99i8x2fmm Ask questions, doubts, problems and we will help you. Horizontal rows of the periodic table of elements are the periods. Properties of Hydrogen are similar to properties of Halogens as electronic configurations of halogens and Hydrogen are same. Electronic configurations model how electrons are arranged in atoms. The position of some elements which were misfit on the basis of atomic mass is now justified on the basis of atomic number. Hydrogen resembles alkali metals i.e. All noble gases are at the extreme right of the table (in most table). 1. 2) Electropositive character: Like alkali metals ,hydrogen also loses its only electron to form hydrogen ion i.e. Position of Hydrogen in the Periodic Table #Hydrogen #PeriodicTable #Chemistry. Skip to main content ; Periodic Table. Its electronic configuration is [1s1]. If the answer is not available please wait for a while and a community member will probably answer this soon. 10 Periodic Table in 8K resolution 11 Other properties of Magnesium Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. Hydrogen occupies a unique position in modern periodic table, justify the statement. (have 1 valence electron in the outermost shell) Metals are found on the left side and centre of the Modern Periodic Table. #class10#periodicclassificationofelements“Hydrogen occupies a unique position in Modern Periodic Table”.Justify the statement. The position of hydrogen was not justified in Mendeleev’s periodic table. Hydrogen has the electronic configuration 1. Download Citation | Concerning the position of hydrogen in the periodic table | The placement of hydrogen in the periodic table has unique implications for fundamental questions of chemical behavior. Modern periodic Law: The properties of elements are a periodic function of their atomic number. Due to the presence of only one electron in its 1s shell, hydrogen exhibits a dual behaviour, i.e., it resembles both alkali metals and halogens. Sodium 1s 2 2s 2 2p 6 3s 1. Hydrogen (Z=1) has electronic configuration 1s1. Watch Video Solution On Doubtnut App Exercise 9.3. Hydrogen’s position was not justified in the very old Mendeleev’s periodic table. It’s a noble gas. The position of hydrogen in the traditional form of the periodic table is at the head of Group 1 (the alkali metals) based on the similarity of the valence shells of this family: each of the elements possesses a half-filled s-orbital, namely, H 1s1, Li 2s1, Na 3s1, etc. All the elements in the period have the same number of shells. Metalloids are found in a zig-zag manner between the metals and the non-metals. For example, argon precedes potassium because argon has atomic number 18 and potassium has 19. Justify the statement" hydrogen occupies a unique position in modern periodic table".. That is why position of hydrogen is still undecided. Justify the position of hydrogen in the periodic table on the basis of its electronic configuration. Although Mendeleev arranged the elements in the increasing order of their atomic masses, there were instances where he had placed an element with a slightly higher atomic mass before an element with a slightly lower atomic mass. Lithium 1s 2 2s 1. Definition, mass & chemical names. Question 29. Modern Periodic Table; Trends in the Modern Periodic Table; Periods. It’s literally at the top right corner of the periodic table. Introduction and Discovery of Hydrogen - Duration: 3:10. Hydrogen Ncert Video Solutions - Only On Doubtnut Download Doubtnut Now Exercise 9.1 Justify the position of hydrogen in the periodic table on the basis of its electronic configuration. Soln: Hydrogen occupies a unique position in the Modern Periodic Table because of the following reasons. Hydrogen is the first element of the periodic table. Therefore, the present position of hydrogen in the modern periodic table is not completely justified. are solved by group of students and teacher of Class 10, which is also the largest student community of Class 10. 6:37. So the answer is False . Watch Video Solution On Doubtnut App Exercise 9.2 Write the names of isotopes of hydrogen. Justify the position of Hydrogen in the periodic table? (Those frivolous Europeans do not have such limitations, and you can freely buy tritium key chains, tritium fishing lures, probably tritium bellybutton rings if you look hard enough.) On one hand, its electronic configuration is similar to the outer electronic configuration (ns1) of alkali metals.On the other hand, like halogens (having electronic configuration ns2np5 belonging to group 17 of the periodic table), it is short by one electron to the corresponding noble gas configuration (ns2np6). He did so because hydrogen and alkali metals have similar properties. Look, in the modern periodic table of elements, there are many factors on which elwments are arranged. Click for even more facts and information on this periodic table element. 32. Hydrogen gains 1 electron and behaves like electronegative halogens [Group 17 (VIIA)]. MBD Alchemie 2,708 views. Li , K , Na , K, Rb ,Cs and Fr of group 1 of the periodic table. It’s atomic number is 2. The lanthanoids and actinoids which have properties different from other groups are placed separately at the bottom of the periodic table. Hydrogen is one of the three most abundant elements present on Earth. The Questions and Answers of Hydrogen occupies a unique position in Modern Periodic Table”. Due to this property of hydrogen, it can be placed either in group I or group VII. Hydrogen has been placed at the top of the alkali metal family. 2 See answers SHIVAMBANDE18122005 SHIVAMBANDE18122005 Explanation: Hydrogen is the first element of the periodic table & often called protium. Sometimes hydrogen loses electron like Group I elements and sometimes it gains electrons like those of group VII. Electronic configuration: Hydrogen has one electron in its valance shell like the alkali metals H - 1s 1. The placement of hydrogen in the periodic table has unique implications for fundamental questions of chemical behavior. Due to the presence of only one electron in its 1s shell, hydrogen exhibits a dual behaviour, i.e., it resembles both alkali metals and halogens. Hydrogen and alkali metals resemble in the following aspects. Its electronic configuration is [1s 1 ]. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Accepted Answer: Though hydrogen is a non-metal, it has been placed at the top of group 1 above the alkali metals because its electronic configuration is similar to alkali metals i.e. In the modern periodic table, elements are in order of atomic number in periods and groups. Properties of hydrogen do not completely match any one of the above-mentioned groups. Hydrogen resembles the elements of group I-A, IV-A and VII-A in some respects. Ramirez-Torres4 has presented a block form table with hydrogen placed in an isolated group unrelated to either the alkali or halogen elements. Position of hydrogen: The position of hydrogen in his periodic table is not properly defined. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Hydrogen loses 1 electron and behaves like electropositive alkali metals [Group 1 (IA)]. 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