Explanation: Metals are the elements that looses electrons and thus, their chemical reactivity will be the tendency to loose electrons. (d) Group 2-Magnesium (Mg) Group 13-Boron (B) (b) The least reactive non-metal has low ∆ i H 1 and ∆ i H 2 and less negative ∆ eg H. Hence, the least reactive non-metal is II. Contents hide. The family that contains the most reactive metals are the alkali metals. Sodium is an alkali metal, being in group 1 of the periodic table. Hence, option C is the required answer. Alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). Cesium reacts explosively with water, though it is predicted francium would react even more vigorously. Francium is the most reactive metal on the periodic table. However, for the really heavy elements, the presence of so many positively charged protons in the nucleus has the affect of causing the electrons to move round at incredibly fast speeds approaching the speed of light. The most reactive metal on the periodic table is francium. By using carbamide granules as the space holder, Mg alloy foams with interconnected pore structures were synthesized by reactive sintering of a mixture of Mg, Al and Zn powders. (d) Group 2-Magnesium (Mg) Group 13-Boron (B) heart outlined. Lithium, sodium, and potassium all react with water, for example. As a result it oxidises all other substances. Therefore, for practical purposes, Cesium is often regarded as the most reactive metal. It is a soft, silvery-white, highly reactive metal. In fact, naturally occurring francium is so rare that the metal must be synthetically created in a laboratory. The most reactive elementary group is alkali metals (situated far apart from intermediate metals and noble gases). The alkali metals are the family of elements that contain the most reactive elements. The most reactive metals, such as sodium, will react with cold water to produce hydrogen and the metal hydroxide: 2 Na (s) + 2 H 2 O (l) →2 NaOH (aq) + H 2 (g) Metals in the middle of the reactivity series, such as iron , will react with acids such as sulfuric acid (but not water at normal temperatures) to give hydrogen and a metal salt . The primary difference between metals is the ease with which they undergo chemical reactions. Identify the most reactive and the least reactive metal amongst the following: AI, K, Cu, Au. Hydrogen Which element is an "odd ball"; it is in the first column with alkali metals, but it is a nonmetal. Name and give the symbol for each of the following: a)the element in period 3 group 2 = Magnesium = Mg b)the halogen in period 4 = Bromine = Br c)the element in period 6 and group 11 = Gold = Au d)the akali metal in period 2 =. So, the most reactive non-metal is L. (c) L, Q, R, T are the elements of the halogen family. The more it goe. Less reactive metals will displace other metals from their compounds. Explanation: Niccherip5 and 5 more users found this answer helpful. (d) Group 2 - Magnesium (Mg) Group 13- Boron (B) 8.4 k+. 5.0 k+. Fluorine is the most reactive non-metal. Which is the most reactive? Uses: Alkali metals are widely used in various fields. Caesium is the most reactive metal in the periodic table, so much that working with this metal often ends in explosions! Sodium is an alkali metal, being in group 1 of the periodic table. Sodium is a chemical element with the symbol "Na" and the atomic number is 11. The most reactive metal on the periodic table is francium. Fluorine is identified as the most reactive nonmetal and the most electronegative element in the periodic table, making it the strongest oxidizing agent. Identify the most reactive and least reactive metal : Al, K, Ca, Au. The effect of Zn/Al on the microstructural evolution and compressive strength of porous Mg-9Al-xZn (x = 1, 5) alloy foams was investigated. Answer (1 of 4): Calcium is most reactive among the given metals. Let's discuss the concepts related to Chemistry and Structure of Atom. what is so special about the elements in Group 8 on the Periodic table? Moving down the column, metals become more reactive because the nucleus gains more electrons and protons. 1 Which is the most reactive nonmetal in the periodic table? Francium, however, is a laboratory-produced element and only minute quantities have been made, so for all practical purposes, the most reactive metal is cesium. Calcium: Calcium is a mineral that is necessary for life. The most reactive metal that has a stable isotope is cesium, which is located directly above francium on the periodic table. science. (b) We know that electronegativity of non-metals increases from left to right in a period due to the increment of effective nuclear charge and decreases down a group due to the increment of size of atom. Explore more from General Science here. Francium is the most reactive metal and fluorine is the most reactive nonmetal. Due to its strong electro negativity & small size, Fluorine has a strong tendency to accept electrons from other atoms or ions. Therefore, potassium is the most reactive metal among the given options. Similarly, why is fluorine the most reactive element? The Activity of Metals. An element's reactivity decreases while going down the reactivity series. It is the most electropositive and thus, most reactive metal. Generally as you go down the periodic table, electro-positivity increases. Francium, however, is a laboratory-produced element and only minute quantities have been made, so for all practical purposes, the most reactive metal is cesium. Reactivity is the ability of a substance to lose or gain an electrons easily. Which group of elements is the most reactive? There is a distinction between "activity" (as in the activity series) and "reactivity." The more reactive an element, the more vigorous is the reaction. 1 Which is the most reactive nonmetal in the periodic table? Calcium: Calcium is a mineral that is necessary for life. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas.Helium is the least reactive non metal. (a) The most reactive non-metal has high ∆ i H 1 and ∆ i H 2 and most negative ∆ eg H Hence, the most reactive non-metal is I. What are the most reactive metals in order? Note: Remember that in case of metals, reactivity depends upon the ease of removal of the valence electrons. Caesium is more reactive. Reason Potassium is highly reactive due to the following reasons The ionization enthalpy of potassium is minimum. Within this group, helium is the least reactive element, forming no stable compounds. Out of the metals,Na,Cu,Au which is :<br> most reactive and . The most reactive metal is _____ (a) Sodium (b) Magnesium (c) Potassium (d) Calcium Among the given metals, Potassium is exceptionally reactive. View more similar questions or ask a new question. Answer: Rubidium is the most reactive metal. Cesium and francium are the two most reactive elements of the group. So, the most reactive non-metal is L. (c) L, Q, R, T are the elements of the halogen family. Elements that have properties of both metals and non-metals and are found along the zig-zag line on the periodic chart. Therefore, we can conclude that alkali metal is the group of elements which contains the most reactive metals. Whereas transition metals lose one or more than one electrons and thus they show variable oxidation states. blusagara. Answer (1 of 4): Activity vs reactivity …. Francium, however, is a laboratory-produced element and only minute quantities have been made, so for all practical purposes, the most reactive metal is cesium. Reactivity is an elements ability to gain an electron. Chemistry. The most reactive metal is francium, the last alkali metal (and most expensive element). Ba is most reactive because it is in the same periodic table column as the other two metals listed but has a greater atomic radius, so . For metals reactivity increases down a group and from right to left across a period. Identify the most reactive and the least reactive metal amongst the following: AI, K, Cu, Au. Element (I E) 1 (I E) 2 1 2372 5251 2 520 7300 3 900 1760 4 1680 3380 Which of the above elements is likely to be a (a) reactive metal (b) reactive non-metal (c) noble gas (d) metal that forms a stable binary halide of the A X 2 Write the sequence of your answer. The symbol of Calcium is "Ca" and its atomic number is 20. The metal is also radioactive and one of the rarest naturally occurring elements. The most reactive metal on the periodic table is francium. The least reactive elements are the noble gases. Alkali metals are the most reactive elements. The most reactive element is fluorine, the first element in the halogen group. For nonmetals reactivity increases up a group and from left to right across a period. Contents hide. So, the most reactive non-metal is L. (c) L, Q, R, T are the elements of the halogen family. (b) We know that electronegativity of non-metals increases from left to right in a period due to the increment of effective nuclear charge and decreases down a group due to the increment of size of atom. Don't mistake these for the alkali earth metals because the alkali are not as reactive as the alkali metals. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive.Lithium, sodium, and potassium all react with water, for example. There are safe means to decompose these metals, but they require care and experience. Fluorine is the most reactive non-metal because it is the most electronegative of all of the non-metal elements of the periodic table. Hence, Francium is the most reactive metal, which is option D. Note: Francium is a laboratory produced element and only minute quantities have been made, so it is only used for experimental purposes and Cesium is used for all practical purposes. Which element is the most reactive of the three Ba Mg Be? Helium is a chemical element with the symbol He and atomic number 2. a. alkali metals and halogens b. noble gases and alkali metals c. alkaline earth metals and halogens d. halogens and noble gases . Cesium metal reacts most vigorously with water, followed by rubidium and potassium. Hence, the least . This weakens the electrostatic force. Read More. Increasing order of reactivity: Cu < Fe < Mg < Ca. The symbol of Calcium is "Ca" and its atomic number is 20. As you move down the column, the metals become more reactive because the nucleus gains more electrons and protons (more electron levels), weakening their electrostatic force. Answer: Rubidium. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. The halogens are the most reactive elements; especially fluorine.. The least reactive elements are the noble gases. Lithium, sodium, and potassium all react with water, for example. 606272420. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example. . Fluorine is a chemical element with the symbol F and atomic number 9. Calcium (Ca) is the most reactive metal amongst these. The phase diagram simulation approach was used to determine the sintering . which two groups of elements in the periodic table are the most reactive? These metals include lithium, sodium, potassium, rubidium, cesium, and francium. Sodium potassium alloy, which is approximately NaK_(2.8) in composition, is a liquidus (and even more reactive than potassium), and for this reason is commonly used to dry low boiling point solvents (i.e. Sodium is a chemical element with the symbol "Na" and the atomic number is 11. science They are also good conductors of electricity. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Alkali metals also have a characteristically lower density, compared to other metals. 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