Which Of The Following Is The Most Active Metal A Lithium Class 11 ...

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsWhich of the following is the most active metal?(A) Lithium(B) Sodium(C) Potassium(D) RubidiumAnswerVerified520.1k+ viewsHint- In order to solve the given problem, we will first see the characteristics on which the activity of metal depends upon. Then we will check for the series of activity of the metals and also the trend followed by different metals in the row of the periodic table; we will further see the different characteristics of active metals.Complete answer:> Activity of metals depends on the basis of ease on which it can undergo any sort of reactions may it with basic abundant substances like oxygen and water as well.> We have four classes of metals on the basis of its activity. They are:Class I Metals: The Active MetalsLi, Na, K, Rb, Cs (Group IA)Ca, Sr, Ba (Group IIA)Class II Metals: The Less Active MetalsMg, Al, Zn, MnClass III Metals: The Structural MetalsCr, Fe, Sn, Pb, CuClass IV Metals: The Coinage MetalsAg, Au, Pt, Hg> The periodic table contains different elements arranged according to the activity of the elements. In the periodic table as we move from right row to left row the activity of the elements increases eventually; so the first group metals or the alkali metals are the most reactive ones.> Also in the periodic table as we move down in the row, the activity of the metals increases so the metals at the end of the row are the most active ones.So, as all the metals listed in the options belong to group 1 so the activity of the element at the bottom amongst the given ones will be most active.The listing of the element is:Lithium< Sodium< Potassium< RubidiumHence, rubidium is the most active amongst the given options.So, the correct answer is option D.Note- On the periodic table the most reactive element is the francium. But Francium is a laboratory-produced element and only minute amounts have been made, so the most reactive metal is cesium for all practical purposes. Cesium reacts explosively with water while francium is expected to react much more vigorously.The most active metals are so reactive that they are readily mixed with the ambient oxygen and water, and are thus contained in an inert liquid such as mineral oil. Second-class metals are only slightly less involved. They don't react at room temperature with water but they react with acids quickly. The third class contains metals which react with only strong acids. Fourth class metals are so unreactive at room temperature they are basically inert. Recently Updated PagesMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for SuccessMaster Class 11 Physics: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Accountancy: Engaging Questions & Answers for SuccessClass 11 Question and Answer - Your Ultimate Solutions GuideMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for SuccessMaster Class 11 Physics: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Accountancy: Engaging Questions & Answers for SuccessClass 11 Question and Answer - Your Ultimate Solutions Guide

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