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Name an alkali metal that is more reactive than K Na or Li Name an alkali metal that is less reactive?
Hydrogen (H) is more reactive. Francium (Fr) is less reactive.
Why is cesium chloride less reactive than cesium?
The high reactivity of cesium comes from its tendency to give up the one electron in its outermost shell and become a cesium 1+ ion, which is more stable. In cesium chloride, the cesium is already in its stable ionic form.
Which is less dense strontium or lithium?
Lithium is less dense than strontium. The density of lithium is about 0.534 g/cm3, whereas the density of strontium is about 2.54 g/cm3.
What is the reactivity trend of the alkali metals in group IA?
The reactivity of alkali metals in Group IA increases as you move down the group from lithium to cesium. This trend is primarily due to the decreasing ionization energy, which makes it easier for these metals to lose their outermost electron. As the atomic radius increases, the outer electron is further from the nucleus and experiences less electrostatic attraction, leading to higher reactivity. Therefore, cesium is more reactive than lithium.
What is the difference between cesium and lithium?
Interestingly, ceasium and lithium are both made of the same fundamental particles and cannot be easily distinguished. The only known test for distinguishing these elements is to drop them in water. Lithium will release a satisfactory whistling noise 3 cents below middle C (at STP). Ceasium will only be 2 cents flat. If you have a chunk of lithium contaminated with ceasium (and you have a good ear) it will sound irritatingly out of tune.
Is the lithium atom bigger than the Cesium atom?
Not at all; the cesium atom is far bigger than the lithium atom.
Which atom lithium or cesium needs more energy to become an ion?
Cesium needs more energy to become an ion than lithium because cesium has a higher ionization energy due to its larger atomic size and greater distance of valence electrons from the nucleus. This makes it more difficult to remove electrons from cesium compared to lithium.
Why is cesium more reactive than lithium?
Both cesium and lithium react by giving up the single electron int their outer shells. Cesium has a larger atomic radius than lithium does and more electron shells between the nucleus and the outer shell. As a result, cesium's valence electron is less attracted to the nucleus than Lithium's is and is therefore more easily removed.
Which one is the most reactive metal potassium lithium or sodium?
Potassium is the most reactive of the three metals (potassium, lithium, and sodium). It reacts vigorously with water, producing hydrogen gas and heat. Sodium is less reactive than potassium, while lithium is the least reactive among the three.
Name an alkali metal that is more reactive than K Na or Li Name an alkali metal that is less reactive?
Hydrogen (H) is more reactive. Francium (Fr) is less reactive.
Why is it easier to lose electrons from a cesium atom than from a lithium atom?
It all has to due with ionization energy. Ionization energy is the energy required to remove an electron from an atom to make it an ion. Cesium has a lower ionization energy than Lithium, so it is easier to remove electrons, and thus lose electrons, from a Cesium atom than a Lithium atom.
Why is cesium more reactive than sodium?
because it is less stable
Why is cesium chloride less reactive than cesium?
The high reactivity of cesium comes from its tendency to give up the one electron in its outermost shell and become a cesium 1+ ion, which is more stable. In cesium chloride, the cesium is already in its stable ionic form.
Which is less dense strontium or lithium?
Lithium is less dense than strontium. The density of lithium is about 0.534 g/cm3, whereas the density of strontium is about 2.54 g/cm3.
Would francium combine with water more or less readily than cesium?
Francium would combine with water more readily than cesium. Francium is the most reactive alkali metal due to its position in the periodic table, so it would react more violently with water compared to cesium.
Does lithium sink under water?
No, lithium is less dense than water, so it will float on the surface of water.
What is the reactivity trend of the alkali metals in group IA?
The reactivity of alkali metals in Group IA increases as you move down the group from lithium to cesium. This trend is primarily due to the decreasing ionization energy, which makes it easier for these metals to lose their outermost electron. As the atomic radius increases, the outer electron is further from the nucleus and experiences less electrostatic attraction, leading to higher reactivity. Therefore, cesium is more reactive than lithium.
