Why is sodium less reactive in comparison to potassium?

Sodium and potassium belongs to same group . Both has 1 electron to donate but sodium is less reactive because nuclear attraction makes it little bit difficult to loose electron as compared to potassium in which nuclear attraction becomes unable to pull the electrons towards itself . read more

Reactivity of a metal depends on it’s ionization energy. As we move down Group 1 , we observe a decrease in the IE , meaning that it’s easier for potassium atoms to lose electrons than sodium atoms. read more

Answer The atomic radius of potassium is greater than that of sodium. Therefore, the single valence electron that exists for all alkali metals is. read more

:Potassium is MORE reactive with water then sodium is. As you move down the periodic table the electrons in the read more

Reactivity of a metal depends on it’s ionization energy. As we move down Group 1 , we observe a decrease in the IE , meaning that it’s easier for potassium atoms to lose electrons than sodium atoms. Therefore , potassium is more reactive than sodium. read more

Potassium is in the most reactive group of elements, the alkali metals, but it's not the most reactive metal within the group. The alkali metals, Group 1A, are the most reactive metals because they have one valence or outer electron. read more

The atomic radius of potassium is greater than that of sodium. Therefore, the single valence electron that exists for all alkali metals is located farther from the nucleus for potassium than sodium. This results in less energy required to remove that valence electron from potassium than from sodium, leading to increased reactivity. read more