![]() Larger atoms have more electron shells and experience weaker electrostatic attraction between the positively charged nucleus and the valence electrons. Atomic Size: The size of the metal atom also influences its reactivity.Lower ionization energy correlates with higher reactivity. 7 Metals with low ionization energies have a weaker hold on their valence electrons, making it easier for them to lose electrons and become positively charged ions. Ionization Energy: Ionization energy is the energy required to remove an electron from an atom or ion in the gaseous state.Metals with one or a few valence electrons are more likely to lose them to achieve a stable electron configuration, making them highly reactive. Metals tend to have fewer valence electrons (electrons in the outermost energy level), which are the electrons involved in chemical bonding. Electron Configuration: The electron configuration of an atom plays a crucial role in determining its reactivity.The reactivity of metals in the periodic table is primarily determined by the following factors: What factors determine the reactivity of metals in the periodic table? 4 Its scarcity and radioactivity make it extremely difficult to study and utilize in practical applications. However, it is important to note that francium is an extremely rare and highly radioactive element, with a very short half-life. It readily reacts with water, oxygen, and other substances, releasing large amounts of energy in the process. The low ionization energy of francium means that it reacts vigorously with other elements, especially non-metals, to achieve a more stable electron configuration. As a result, francium readily loses its outermost electron to form a positive ion. This combination results in a very weak hold on its outermost electron, making it relatively easy to remove. In the case of francium, it has the largest atomic radius and the fewest electrons in its outermost energy level. ![]() 3 Ionization energy refers to the energy required to remove an electron from an atom or ion in the gaseous state. ![]() Metal reactivity generally decreases across a period from left to right in the periodic table due to increasing ionization energy and electronegativity.įrancium is often considered the most reactive metal because it has the lowest ionization energy among all the elements on the periodic table.The reactivity of metals is determined by factors such as electron configuration, ionization energy, atomic size, and electronegativity.Francium is considered the most reactive metal due to its low ionization energy and large atomic size.Key Takeaways: Most Reactive Metal in the Periodic Table ![]()
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