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The elements in the first group of the period table which have one electron in their outer shells and react extremely well are also known as the alkali metals. These elements are Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium.

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9y ago
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13y ago

Actually, the answer is Alkaline-earth Metals. They are slightly less reactive than alkali metals. They are silver colored and more dense than alkali metals.

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14y ago

Elements in the second group of the Periodic Table have 2 outer shell electrons and are also very reactive What are they called?

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9y ago

The elements are called ALKALIS which are present in first group and has one outer shell electron and is extremely reactive.

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14y ago

Alkali Earth metal

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11y ago

alkaline earth metals

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13y ago

Alkaline earth metals

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15y ago

This group is called "Alkali metals".

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Q: What are the elements called in the first group of the periodic table that have one outer shell electron and is extremely reactive?
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Related questions

What does being in Group 1 in the periodic table tell us about these elements?

These elements all want to lose 1 electron to have a noble gas electron configuration and are thus extremely reactive, particularly with water.See the Related Questions to the left for more information about the Group 1 alkali metal elements.


What are properties of the group of elements on the periodic table that have just one valence electron?

Apart from hydrogen, they are very reactive metallic (alkali) elements.


What is the most reactive group of elements?

It is in Group 17 that you will find the most reactive elements. These elements all lack only one electron from having that "magic" electron configuration of the inert gases. That makes these elements very "hungry" to get that "last electron" so their electron structures become more stable.


Which elements are most likely to react with other elements?

The elements in Group 1 of the Periodic Table are highly reactive in water, and, only slightly less reactive in Oxygen. Group 2 elements are also quite reactive in Oxygen, but not quite as reactive as those elements in Group 1.


What do the elements of Group 1 on the periodic table have in common?

They are all reactive metals with one valence electron in their outermost s sublevel.


What is the most explosive substance on earth?

The most explosive element is Francium, located on the bottom left hand corner on the Periodic Table of Elements. It is extremely reactive, as it wants to "give" away one electron to become stable.


Is fluorine the most reactive element in the periodic table?

Yes, fluorine is the most reactive element on the periodic table.


What are the elements reactivity in group seven in the periodic table?

elements in group 17 need one more electron to attain the nearest noble gas configuration, hence they are more reactive


Why are Alkaline metals not found free in nature?

because they are extremely reactive. They belongs to group of one periodic table and have one electron in the outer valence shell.


What are the highest and lowest reactive elements on the periodic table?

As you move left on the periodic table, the elements get more reactive and as you move down the periodic table. Using that thinking the most reactive elements are the Alkali Earth Metals (column 1) and the most reactive element is Francium. The least reactive are the noble gases in the last column- Helium, Neon, Argon etc..


Which elements in the periodic table would be expected to be more reactive than phosphorus (P)?

Metals are more reactive elements.


The two most reactive groups of elements in the periodic table are the alkali metals and the what?

The two most reactive groups of elements in the periodic table are the alkali metals and halogens.