Definitely lithium. Lithium is a Group I alkali metal, while Beryllium is a Group II alkaline earth metal and are on the same period. Group I Alkali metals are generally more reactive as they only need to lose one electron to have a complete outer shell.
The metals listed are all alkali metals or alkali-earth metals. The periodic trend for these groups is: as you move down the group/family, reactivity increases. The alkali metals will be more reactive than the respective alkali-earth metals.Sodium and lithium are alkali metals, so you can organize them first. Sodium is further down in the family than lithium, so we can say that sodium is the most reactive out of the group, followed by lithium. Then we have barium and radium left. Radium is slightly more reactive than barium due to its position, so it is third and barium is fourth.
No, magnesium cannot replace lithium in a single replacement reaction because lithium is more reactive than magnesium. In single replacement reactions, a more reactive element will displace a less reactive element from a compound, but this is not possible in this case due to the reactivity trend.
Barium is more reactive than magnesium, and beryllium is less reactive than both. Reactivity generally increases as you move down a group on the periodic table, so barium is more reactive than magnesium due to its position in the same group.
neon is a noble gas that will not react with anything -- any other element except helium is more reactive than neon! With lithium, quite a reactive metal, it is certainly more reactive than neon.
Barium (Ba) would be more reactive than strontium (Sr) because barium is located further down the Group 2 elements in the periodic table. As you move down the Group, the reactivity of the elements tends to increase due to the larger atomic size and lower ionization energy, making barium more reactive than strontium.
Lithium is more reactive.
lithium
Cesium is more reactive than barium. Cesium is located lower down in Group 1 of the periodic table, making it more reactive than barium, which is further up the group. Cesium readily reacts with air and water, while barium is less reactive in comparison.
Sodium is more reactive than lithium and magnesium but less reactive than potassium.
The metals listed are all alkali metals or alkali-earth metals. The periodic trend for these groups is: as you move down the group/family, reactivity increases. The alkali metals will be more reactive than the respective alkali-earth metals.Sodium and lithium are alkali metals, so you can organize them first. Sodium is further down in the family than lithium, so we can say that sodium is the most reactive out of the group, followed by lithium. Then we have barium and radium left. Radium is slightly more reactive than barium due to its position, so it is third and barium is fourth.
Element X is more reactive than lithium and magnesium because it has a higher tendency to lose electrons and form positive ions, making it more likely to react with other substances.
No, magnesium cannot replace lithium in a single replacement reaction because lithium is more reactive than magnesium. In single replacement reactions, a more reactive element will displace a less reactive element from a compound, but this is not possible in this case due to the reactivity trend.
Lithium by far, it is an alkali metal. Alkali metals are known to explode when they are placed in water (hydrogen gas is released). Nitrogen has two electrons to fill, and alkali metals have one electron to give off. Think of it as 2>1. Just know that lithium is more reactive than nitrogen.
Element M is calcium. It reacts with chlorine to form calcium chloride (CaCl2). Calcium is more reactive than magnesium and smaller than barium on the periodic table.
Fluorine would be the more reactive element because it needs to gain one electron. While Barium needs to gain two electrons. Thus it is easier to gain one than to lose two.
Barium is more reactive than magnesium, and beryllium is less reactive than both. Reactivity generally increases as you move down a group on the periodic table, so barium is more reactive than magnesium due to its position in the same group.
Element M can be a choice of 4 elements, Beryllium, Magnesium, Calcium, or Strontium. The element must have an oxidation of +2, which means group 2 elements. The atomic radius of a barium atom is 222pm. Radium has a larger atomic radius that Barium, so that is eliminated, and Barium is the same as Barium so that is also eliminated.