because Li ion is more hydrated
Hydrogen (H) is more reactive. Francium (Fr) is less reactive.
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.
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.
Sodium is more reactive than lithium and magnesium but less reactive than potassium.
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.
Not at all; the cesium atom is far bigger than the lithium atom.
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.
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.
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.
Hydrogen (H) is more reactive. Francium (Fr) is less reactive.
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.
because it is less stable
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.
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.
No, lithium is less dense than water, so it will float on the surface of water.
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.
Aluminum is less reactive than lithium. Aluminum forms a protective oxide layer on its surface that prevents further reaction, while lithium is highly reactive and can react violently with water or air.