Why is potassium more reactive than sodium or lithium? so valence electrons are more tightly held in Li than K. Due to larger size of K the valence electrons are loosely held and easy to remove the electron from K.Hence K is more reactive. Potassium is in the most reactive group of elements, the alkali metals, but it's not the most reactive metal within the group. So the electrostatic force between the nucleus and the outer shell electron (OSE) is weaker, hence it is easier to lose the OSE (alkali metals have only 1 OSE). This makes Francium the most reactive, followed by cesium, rubidium, potassium, sodium and lithium. It is dangerous to put these metals into an acid. K + H 2 O --> KOH + H 2 Both potassium and sodium possess one electron in their outer shell. (a) (i) Complete the table of information about two isotopes of potassium. A solution of chlorine can displace iodine from potassium iodide solution: chlorine + potassium iodide → potassium chloride + iodine Thus, in potassium, the outermost electron is better shielded from the attractive force of the nucleus. Explain why potassium is more reactive than lithium (3 marks) More shells/electrons, less shielding (or weaker attraction from nucleus), easier to lose electrons Explain why bromine is less reactive than chlorine (3 marks) Group 1 contains reactive metals, group 7 contains reactive non-metals and group 0 contains unreactive non-metals. Reactions with dilute sulphuric or hydrochloric acid can be used to establish the reactivity order for magnesium, Understanding the reactivity series is fundamental to chemistry; it explains why most reactions happen and what changes the particles will undergo during the reaction. The Reaction of Metals with Dilute Acid.. Potassium, sodium, lithium and calcium all react violently with dilute sulfuric acid and dilute hydrochloric acid. Thus, its valence electron is more loosely held than lithium's. lithium, sodium & potassium etc. Chlorine reacts with potassium bromide to form potassium chloride and bromine. The Reactivity Series. Hence, potassium is more reactive than sodium. Answers (1) Ellen Moyer 20 November, 10:57. By losing one valence electron from its 4s orbital it acquires the stable electronic configuration of the inert element Argon (Ar) in the form of a potassium ion K +.. A more reactive metal will displace a less reactive metal.In addition a more reactive metal will react more vigorously than a less reactive metal.For. This is because Cl is higher up Group 7 than iodine (Cl: 2,8,7 electron configuration). Lithium has less atomic weight than Sodium. Potassium is also more reactive than Lithium because as you go down Group 1, the alkali metals become more reactive because the outer electron is more easily lost, because its … The reaction is similar to the reaction with water, forming the metal salt (either sulfate or chloride) plus H 2(g).. For example. ( Log Out / Why potassium is more reactive than lithium? How I survived homophobic bullying: Shaun Dellenty at TEDxYouth@Hackney This is an excellent link to Shaun Dellenty deputy head in a primary school in London describing his experiences growing up as gay in Lutterworth Leicestershire and work … سایت رزرو خدمات گردشگری. Cl can gain an electron more easily than iodine - Cl more reactive. I'm sitting a GCSE Unit 3 Chemistry Exam in a few days, and a common question on exam papers is: In terms of atomic structure, why is lithium less reactive than potassium? Sodium has the electronic configuration 2,8,1 and lithium has 2,1. Explain, using the equation, how you know that chlorine has been reduced. EduRev is a knowledge-sharing community that depends on everyone being able to … both potassium K and Lithium Li have one electron in their outermost shell. Sodium has the electronic configuration 2,8,1 and potassium has 2,8,8,1. Potassium is the most reactive because less energy is required to remove the outer electron from its atom; the size of the atom is bigger and therefore the atom is furthr away from the nucleus and the outer electron is therefore less strongly attracted to the nucleus. International GCSE. 2.8 explain the relative reactivites of the elements in Group 1 in terms of distance between the outer electrons and the nucleus. Francium is almost non-existent in nature so cesium is the most reactive metal of those observed. Thus, the potassium ion K + and Ar are … Reactions of metals with dilute acids It is too dangerous to react the very reactive metals, potassium, sodium, lithium and calcium with acids. A displacement reaction happens when a more reactive metal (one that forms positive ions more easily) displaces a less reactive metal from a compound. 2 *P45944A0220* DO NOT WRITE IN THIS AREA ... 5 Potassium and lithium are Group 1 metals that exist as isotopes. Number, RTECS Configuration, Oxidation You can study the detailed comparison between Rubidium vs Potassium with most reliable information about their properties, attributes, facts, uses etc. are solved by group of students and teacher of Class 10, which is also the largest student community of Class 10. So, the least reactive metal in Group 1 is also the highest element in the group,so it would be lithium, then sodium, then potassium and so on. Looking at the even larger elements, rubidium is more reactive than potassium because of the same reasoning. منوی اصلی. The metals become more reactive with increasing atomic number. Potassium is larger than lithium. معرفی; قوانین و مقررات; قوانین کنسلی Explain why potassium is more reactive than sodium, giving the balanced chemical symbol equation for the reaction of potassium and water. The valence electron in potassium has less nuclear interaction and it is able to lose electron easily as compared to sodium and hence more reactive than sodium. This makes Francium the most reactive, followed by cesium, rubidium, potassium, sodium and lithium. So sodium is more reactive than lithium (Triple only) Explain, by referring to the electronic configurations, why potassium is more reactive than sodium. Why is potassium more reactive than sodium or lithium? the thing is that a K atom has more shells of electrons that increases the distance between the outermost electron and the central nucleus. Although the bromine nucleus is more positively charged than the chlorine nucleus, the increase in the radius and the extra shielding in the bromine atom outweigh this factor, which means that an electron is more easily attracted into the outer shell of a chlorine atom than that of a bromine atom, so chlorine is more reactive. The outer electron lost from sodium is further from the nucleus therefore the electron is less attracted by the nucleus. The Questions and Answers of Why potassium is more reactive than lithium? 2. Therefore, the single valence electron that exists for all alkali metals is located farther from the nucleus for potassium than … Reactivity of these halogens correspond to its ability to gain an electron. Originally posted on Suffolk Tutors -science tuition in west suffolk: Anti- hate resources and LGBT awareness raising. Explain why potassium is more reactive than lithium… This is because their atoms get bigger, so the outer shell electrons are further away from the nucleus. Potassium (K), a Group I element of the 4th period, has the electronic configuration .It has an unpaired electron in its outermost shell, namely, that in the 4s orbital. It all depends on how far that valence electron is when compared to other members of the family. Cl outer shell closer to nucleus (and less shielded) than … Answer the followingWhy is potassium more reactive than lithium?ii) Why fluorine is more reactive… Potassium is larger than lithium. The atomic radius of potassium is greater than that of sodium. 13) This element is more reactive than sodium and calcium but less reactive than … Chemistry notes on the physical properties of lithium, sodium, potassium, rubidium, caesium (cesium) and francium, The chemical properties, chemical reactions with water, oxygen and chlorine - word equations & balanced equations and uses of the elements and compounds of the Group 1 Alkali Metals of the Periodic Table e.g. Or why is potassium more reactive than lithium? For example, chlorine is more reactive than iodine. Reactivity increases down group 1 but up group 7. If the answer is not available please wait for a while and … I'm aware it has to do with increased distance and shielding, but i wanted to know if you know a generic answer that I could use to answer any … If the answer is not available please wait for a while and a community member will probably answer this The alkali metals, Group 1A, are the most reactive metals because they have one valence or outer electron. As you go down the group the metals become more and more reactive. It follows, therefore, that this outermost electron is more easily lost than it is in sodium, so potassium can form K+ more readily than sodium can form Na+. "logo": { than rubidium, and rubidium more than potassium, etc. Click here to get an answer to your question ️ chloride.g. Potassium and Lithium are metals and they have the tendency to loose electrons.Lithium is smaller in size than potassium . (Triple only) Explain, by referring to the electronic configurations, why lithium is less reactive than sodium. So density of 'Na' is greater than that of 'Li'. Example: Magnesium is more reactive than copper, so magnesium can displace copper from a copper sulfate solution to create magnesium sulfate. In this reaction chlorine forms chloride ions: Cl2 + 2KBr --> 2KCl + Br2. About WordPress ... lithium, sodium and potassium. But in the case of 'K' and 'Na', d-orbitals present in Potassium, which increases the volume of 'K'.

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