Lithium, Nickel, Xenon.
lithium is a violently reactive metalnickel is a fairly nonreactive metalxenon is an inert gas
These elements are hafnium and zirconium.
Lithium.
Hydrogen (0.0899 g/L), Helium (0.1785 g/L), Lithium (0.534 g/L)
Francium is considered the most reactive of the group 1 elements. This is because it is the largest of all elements in group 1, therefore takes the least amount of energy to lose an electron (Group 1 elements react by losing electrons.)
In order from least reactive to most, the order is xenon, nickel, then lithium. I determined this based in the theory that non-metals are less reactive.
lithium is a violently reactive metalnickel is a fairly nonreactive metalxenon is an inert gas
rubidium
These elements are hafnium and zirconium.
Lithium will have least ionic mobility as it has the greatest hydration energy.
Lithium, (Li) element three and the least reactive of the alkali metals group.
Lithium.
chlorine (greatest), bromine, sodium, potassium (least)
Lithium
From least to greatest: Penny Nickel Dime Quarter Half Dollar Gold and Silver Dollar
Alkali metal is a term that refers to six elements: lithium, sodium, potassium, rubidium, cesium, and francium. These elements make up group I of the periodic table of elements. They all form singly-charged positive ions, and are extremely reactive. They react violently with water, forming hydroxides and releasing hydrogen gas and heat. Cesium and francium are the most reactive and lithium is the least.
Hydrogen (0.0899 g/L), Helium (0.1785 g/L), Lithium (0.534 g/L)