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What element is less reactive than lithium?
Answer: Beryllium (Be) is less reactive because it is to the right of lithium (Li) in the period.
Why is helium the least reactive element?
Noble gases are the least reactive of all known elements. That’s because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons. Therefore, noble gases are rarely involved in chemical reactions and almost never form compounds with other elements.
Is helium low reactive?
Helium is a colourless, odourless, insipid and non-toxic gas. It’s less soluble in water than any other gas. It’s the less reactive element and doesn’t essentially form chemical compounds. The density and viscosity of helium vapour are very low.
Is lithium the least reactive?
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive. Because alkali metals are so reactive, they are found in nature only in combination with other elements.
Why is Lithium less reactive?
Explanation: As you have said, Lithium is smaller than Sodium, the valence electron on sodium is further away from the positive nucleus and therefore it has a weaker electrostatic attraction and is more easily lost in a chemical reaction, making it more reactive.
Why isn’t helium The most reactive nonmetal?
Noble gases are the least reactive of all known elements. Their outer energy levels are full because they each have eight valence electrons. The only exception is helium, which has just two electrons. Therefore, noble gases are rarely involved in chemical reactions and almost never form compounds with other elements.
Why is helium so stable?
Helium’s staunch stability is due to its closed-shell electronic configuration – its outer shell is complete, which means there’s no room for it to bond with other atoms by sharing electrons. And, curiously enough, the compound appears to form without any chemical bonds to hold it together.