Which two groups of elements in the periodic table are the most reactive?(1 point) Responses noble gases and alkali metals noble gases and alkali metals alkaline earth metals and halogens alkaline earth metals and halogens halogens and noble gases halogens and noble gases alkali metals and halogens
alkali metals and halogens
The two groups of elements in the periodic table that are the most reactive are the alkali metals and the halogens.
To determine which two groups of elements in the periodic table are the most reactive, we need to consider their electron configuration.
Reactivity of elements is mainly determined by the number of valence electrons they have. Valence electrons are the electrons found in the outermost shell of an atom.
The two groups that are most reactive are the alkali metals (Group 1) and the halogens (Group 17).
1. Alkali Metals (Group 1): These elements have one valence electron. Since they have a low electronegativity and a strong desire to lose this electron, alkali metals are highly reactive. They readily react with other elements, especially non-metals, to form ionic compounds.
2. Halogens (Group 17): These elements have seven valence electrons, and they require only one more electron to achieve a stable electron configuration. Halogens, being highly electronegative, have a strong tendency to gain an electron and become negatively charged. They are very reactive and often react with alkali metals to form salts.
Therefore, the two most reactive groups of elements in the periodic table are the alkali metals (Group 1) and the halogens (Group 17).