Which Metal is the Most Reactive Element?

By Harshal Vispute|Updated : July 23rd, 2022

The arrangement of metals in declining order of their reactivities is referred to as the "metal reactivity series," sometimes known as the "activity series." To determine if a metal can displace another in a single displacement reaction, one can use the information offered by the reactivity series. It can also be used to find out how reactive various metals are to acids and water. Metals frequently create cations and lose electrons. Most of them produce metal oxides when they interact with ambient oxygen. However, the reactivities of various metals toward oxygen vary (unreactive metals such as gold and platinum do not readily form oxides when exposed to air).

Potassium, Sodium, Lithium, Barium, Strontium, and other metals are listed in decreasing order of their reactivity. The arrangement of metals in declining order of their reactivities is referred to as the "metal reactivity series," sometimes known as the "activity series."

Given their ease of oxidation, the metals near the top of the reactivity range are effective reducing agents. These metals corrode and discolor quite quickly. While moving down the series, the metals' reducing power becomes weaker. Moving down the reactivity series of metals also causes the electro positivity of the elements to decrease. All metals above hydrogen in the activity series react with dilute HCl or H2SO4 to release gas.

Additional Information about Potassium

  • Potassium is an electrolyte and a mineral.
  • It enables your muscles to function, including those that manage your breathing and heartbeat.
  • You get potassium from the food you eat.
  • Your body uses the potassium it needs.
  • Your kidneys purge your blood of excess potassium your body does not require.
  • It has an atomic number of 19.


Which Metal is the Most Reactive Element?

In the periodic table, chemical reactivity decreases from left to right and, in the case of metals, increases as you move down the group. This occurs because, as you move from left to right in the periodic table, the elements have more electrons in their valence shells and are less reactive than the metals, which have less valency. As you move down the group, it becomes easier for electrons to be taken away, leading to high chemical reactivity. As you move down the group, alkali metals tend to become more reactive. As a result, sodium and potassium are less reactive with water than the alkaline metals, whereas calcium is more reactive than magnesium. Additionally, the extreme left-hand elements have higher radii and lower ionization energies due to their high reactivity.

Among the listed elements in the options, potassium is located at the very left edge of the periodic table and in the lowest place within the group. Compared to sodium, potassium metal has more shells, making it easier to remove one electron from its outermost orbital ( less ionization enthalpy). Therefore, the most reactive metal is potassium.

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Which Metal is the Most Reactive Element FAQ's

  • Reactive metals are a class of metal elements that can react with acids, water, mineral acids, and potent oxidizing acids. The activity or reactivity series, which ranks the most reactive metals from highest to lowest, can be used to pinpoint this group.

  • Most metals are reactive, except platinum. It is regarded as a noble metal because it exhibits extraordinary corrosion resistance even at high temperatures. As a result, platinum is frequently discovered chemically alone as natural platinum.

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