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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?
What is the location of the alkali metals that are extremely reactive?
yes they are extremely reactive. They are inn the 1st group.
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.
How chemically active are alkali metals?
Alkali metals are the most reactive metals.
What are more reactive alkali metals or alkline earth metals?
alkali metals
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.
How are alkali metals different any from other metals?
Alkali metals are very reactive metals.
What are the group of soft silvery reactive metals known as?
alkali 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.
Are alkali metals considered to be very reactive or very unreactive?
Alkali metals are very reactive metals.
