The most reactive metal on the periodic table is francium
Which metal is the most reactive?
– So, out of given metals, Potassium is the most reactive metal. Therefore, potassium is the most reactive metal among the given options.
What are the 4 most reactive metals?
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.
How can you tell which metal is more reactive?
The primary difference between metals is the ease with which they undergo chemical reactions. 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.
Is CU reactive?
| Element Reaction with dilute acids | Copper Very slowly | Silver Barely reacts | Gold Does not react |
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Which is less reactive metal?
As we can see in the series, out of all the given options gold is the least reactive metal.
What is the least reactive element?
Chemical Properties of Noble Gases
Noble gases are the least reactive of all known elements. That’s because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons.
Which two families are the most reactive?
The two most reactive families of elements are the halogens and the alkali metals .
Which families are highly reactive?
The most reactive metals in the periodic tables are the alkali metals , followed by the alkaline earth metals.
How do you know if a metal is more reactive than hydrogen?
Whether hydrogen or a metal is produced at the cathode depends on the position of the metal in the metal reactivity series : the metal is produced at the cathode if it is less reactive than hydrogen. hydrogen is produced at the cathode if the metal is more reactive than hydrogen.
Why is silver not very reactive?
Silver is a rather unreactive metal. This is because its filled 4d shell is not very effective in shielding the electrostatic forces of attraction from the nucleus to the outermost 5s electron , and hence silver is near the bottom of the electrochemical series (E 0 (Ag + /Ag) = +0.799 V).
What makes a metal reactive?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. ... Alkali metals are highly reactive because they readily lose the single electron in their outermost shell .
Is lead a reactive metal?
Lead is a reactive metal , but its reactivity is somewhat inhibited by the formation of an outer skin of protective compounds. For example, when a freshly cut piece of lead metal is exposed to the air, it quickly reacts with oxygen to form a thin outer layer of lead oxide.
Which is the most reactive?
Cesium is second from the bottom of this group, has 6 shells of electrons, and it matches the features of a reactive atom, making it the most reactive element.
Is Silver reactive?
Silver is one of the noblest—that is, least chemically reactive —of the transition elements.
Which metal is less reactive copper or iron?
Complete answer: Copper is less reactive than iron . Since, according to the atomic structure, iron has four unpaired shells in its three sub shells, while copper only has one electron. As a result, iron can react faster than copper.
