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There is only one electron in the outer most electron shell.
With the lighter (less massive) alkali metals, there are less electron shells, between the outer most electron and the nucleus. Since the nucleus is positive(Protons) it more strongly holds the outer most electron. However, when going down the Alkali (Group 1) metals there are more electron shells, so the outer most electron is further away from the nucleus, and thereby less strongly held.
This is evidenced by Lithium (The least massive) which only slowly effervesces in water. At the bottom of the group Francium ( The most massive) is explosive in water.
NB Francium is not used in the open laboratory because it is also radio-active.
What else can I help you with?
Which group is the most highly reactive metal group?
Group 1, the Alkali Metals, which are extremely reactive.
Which group of metals is more reactive the alkali metals or the alkaline earth metals?
The alkali metals are more reactive.
What metal in the far-left-column of the periodic table that are extremely reactive?
The alkali metals in group 1 are the most reactive.
Are alkali and alkaline earth metals are not reactive?
No. The alkali and alkaline earth metals are very reactive.
What type of metal such as sodium have a single valence electrons and are very reactive?
Highly reactive metals with one valence electron are known as Alkali metals.
What are more reactive alkali metals or alkline earth metals?
alkali metals
How are alkali metals different any from other metals?
Alkali metals are very reactive metals.
Is alkali metals highly reactive because of its one valence electrons?
Yes, alkali metals are highly reactive because they have one valence electron that they readily donate to achieve a stable electron configuration. This makes them extremely reactive with water and air, which results in explosive reactions.
What are the group of soft silvery reactive metals known as?
alkali metals
Are alkali metals considered to be very reactive or very unreactive?
Alkali metals are very reactive metals.
What are physical properties for alkali metals?
Alkali metals are powerful reducing agents, they give up one electron easily. They are extremely reactive.
The Family of what is the most reactive group of metals in the periodic table?
The most reactive group of metals in the periodic table is Group 1, the alkali metals. These metals are highly reactive due to their low ionization energies, which means they readily lose their outermost electron to form positive ions. This reactivity increases as you move down the group due to the decreasing ionization energies.
