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The external level of electrons in actinium has 2 electrons; but actinium is trivalent.

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Q: Why does actinium have 2 valence electrons?
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Related questions

How many valence electrons does actinium have?

There are 2 valence electrons in Actinium.


How many valance electrons does actinium have?

Actinium has three valence electrons.


How many actinium electrons in each sells?

Actinium has 2, 8, 18, 32, 18, 9, 2 electrons in each shell.


What is the number of valence electrons the element helium has?

Helium has 2 electrons (total of 2 electrons and 2 valence electrons)


What is beryllium number of valence electrons?

The beryllium atom has 4 electrons and the valence is 2.


What is the number of valence electrons for group 2 elements?

Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).


How many valense electrons does strontium have?

There are 2 valence electrons in Radium. There are 2 valence electrons in Radium.


What is the number of valence electrons in strontium?

Strontium has 2 valence electrons because it is part of the Alkaline Earth Metals or Group 2 of the periodic table which all have 2 valence electrons


How many valence electrons are in an atom of magnesuim?

There are 2 valence electrons in an atom of magnesium. There are 5 valence electrons that are in an atom of phosphorus. There are 4 valence electrons that are in a silicon atom.


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Magnesium has 2 valence electrons.


How many valence electrons does Be have?

Beryllium has two valence electrons.


What is heliums number of valence electrons?

Helium has 2 valence electrons.