Explanation: Alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). 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.
What is the order of reactivity of metals?
Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > Cu > Ag. Was this answer helpful?
What are the top 10 most reactive elements?
Top 10 Most Reactive Elements
Aluminum. Atomic number is 13. It’s symbol is Al.Zinc. Iron’s symbol is Fe. It’s atomic number 26. Iron is on of the Earth’s most common element by mass. Iron.Copper. Lead is located in the carbon group. Melting point is 625 degrees Fahrenheit. It’s symbol is Pb.
What is the 2nd most reactive metal?
The alkaline earth metals are the second most reactive family of elements. Beryllium, magnesium, calcium, strontium, barium and radium are all shiny, and silvery-white.
Is cesium the most reactive metal?
The most reactive metal on the periodic table is francium. 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.
Is fluorine the most reactive element?
fluorine (F), most reactive chemical element and the lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. Its chemical activity can be attributed to its extreme ability to attract electrons (it is the most electronegative element) and to the small size of its atoms.
Which of the following element is most reactive?
Fluorine is the most reactive element among the given elements.
Why is cesium so reactive?
The higher the effective nuclear charge is, the greater the attraction is between electrons and the nucleus. Cesium’s low effective nuclear charge indicates that the nucleus does a poor job of attracting its electrons. Both of these factors make cesium extremely reactive.
Why is zinc more reactive than iron?
Zinc more reactive than iron. The reason are: Zinc is a more electropositive element than iron. Zinc has a bigger atomic size than that of iron and thus has more number of electrons.
What is common among the three most reactive 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.
What is the most reactive metal in group 1?
Reactivity of Group 1 Elements
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive. Because alkali metals are so reactive, they are found in nature only in combination with other elements.
Why is cesium more reactive than sodium?
Caesium is more reactive than sodium in terms of electrons because of the following reason: Alkali metals tend to lose a single valence electron and form a positive ion, resulting in an inert gas configuration, however, the distance between the valence electrons is greatest in the case of caesium.
Why is cesium more reactive than Francium?
The electrons become a little closer to the nucleus than expected and they also become slightly harder to remove than expected. Thus Caesium is more reactive than Francium.
Why is cesium more reactive than potassium?
So outermost electron is farther away from nucleus. So the ionization energy in K is less than that in Na or in Li. So Potassium is more reactive than many other metals. However, Rubidium Rb and Cesium Cs are more reactive than Potassium.
Which is more reactive caesium or fluorine?
Fluorine is identified as the most reactive nonmetal and the most electronegative element in the periodic table, making it the strongest oxidizing agent. Caesium is the most reactive metal in the periodic table, so much that working with this metal often ends in explosions!
Is rubidium more reactive than caesium?
Rubidium is a typical but very reactive member of the series of alkali metals. It is appreciably more reactive than potassium, but less so than caesium, and so would be expected to react more violently with those materials that are hazardous with potassium or sodium.
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