STABLE all the way!
metallic
The most reactive elements are alkali metals and halogens.
Chlorine is the most reactive gas element. Chlorine is in the halogen family.
Elements that are likely to be the least reactive are those found in Group 18 of the periodic table, known as the noble gases. These elements, such as helium, neon, and argon, have a full outer shell of valence electrons (eight, in most cases), making them stable and less likely to engage in chemical reactions. Additionally, elements with a full outer shell, like the alkaline earth metals in Group 2, are also generally less reactive than those with fewer valence electrons.
The inner core of the Earth is primarily composed of iron and nickel. These elements are believed to make up about 85% of the inner core, with the remaining portion likely consisting of lighter elements such as oxygen, sulfur, and silicon.
If you find an element in its pure elemental state in nature, you can infer that the element is likely not very reactive chemically. This is because elements in their pure form tend to have a full outer electron shell, making them stable and less likely to form chemical bonds with other elements.
Both stable elements and highly reactive elements have a specific number of protons and electrons, which determine their chemical properties. However, stable elements have a full outer electron shell, making them less likely to form chemical bonds, while highly reactive elements have an incomplete outer shell and are more likely to react with other elements to achieve stability.
Non-reactive elements in the periodic table are typically the noble gases, such as helium, neon, and argon. These elements have a full outer electron shell, making them stable and less likely to form chemical bonds. Reactive elements are those that readily form chemical bonds with other elements, such as the alkali metals (e.g. sodium, potassium) and halogens (e.g. fluorine, chlorine).
The elements in Group 1 of the Periodic Table are highly reactive in water, and, only slightly less reactive in Oxygen. Group 2 elements are also quite reactive in Oxygen, but not quite as reactive as those elements in Group 1.
metallic
The most reactive elements are alkali metals and halogens.
Chlorine is the most reactive gas element. Chlorine is in the halogen family.
Elements that are likely to be the least reactive are those found in Group 18 of the periodic table, known as the noble gases. These elements, such as helium, neon, and argon, have a full outer shell of valence electrons (eight, in most cases), making them stable and less likely to engage in chemical reactions. Additionally, elements with a full outer shell, like the alkaline earth metals in Group 2, are also generally less reactive than those with fewer valence electrons.
Sulfur is less reactive than phosphorus. Phosphorus is more likely to form compounds with other elements due to its higher reactivity.
Ionization energy is the amount of energy needed to remove an electron from an atom. Elements with higher ionization energy are less likely to lose electrons and therefore are less reactive. Conversely, elements with lower ionization energy are more likely to lose electrons and are more reactive.
The inner core of the Earth is primarily composed of iron and nickel. These elements are believed to make up about 85% of the inner core, with the remaining portion likely consisting of lighter elements such as oxygen, sulfur, and silicon.
Krypton is a noble gas and is considered non-reactive because it has a full valence shell of electrons, making it stable and less likely to form chemical bonds with other elements.