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Hydrogen and Helium both only need two valence electrons to fill their outer shell.

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12y ago
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11y ago

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Q: What two atoms will have their outer energy level filled with two electrons?
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Related questions

How many electrons are in the outermost energy level of carbon and how many does it need to have this energy level filled?

Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.


Which atoms will have their outer energy level filled with 2 electrons?

There are more than two such atoms. Perhaps there was a list of atoms you had to chose from. Anyway, two such atoms are beryllium and magnesium.


How many valence electrons does heluim need to have a filled outermost energy level?

Helium only needs 2 valence electrons to have a filled outermost energy level.


Which two atoms will have their outer energy level filled with 2 electrons?

There are more than two such atoms. Perhaps there was a list of atoms you had to chose from. Anyway, two such atoms are beryllium and magnesium.


How many electrons does it need to have in the outermost energy level filled?

8 electrons


How many electrons are in the outermost level of carbon how many electron does it need to have fill this energy level?

Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.


An atoms second energy level can hold up to how many electrons?

Maximum of 8 electrons in second energy level.


Do noble gases have the maximum number of electrons in their outer energy level?

Yes, the outermost energy level of the atoms of the noble gases are filled, meaning that they have the maximum number of electrons. This is why noble gases are stable and unreactive. The atoms of reactive elements share or transfer electrons in order to fill their outermost energy levels, making them stable like the noble gases.


What is one way atoms fill their outermost energy level?

Atoms can fill their outermost energy level by either gaining electrons from other atoms or by sharing the outermost electrons with another atom.


What element has atoms with only one completely filled principal energy level?

undiscovered...yet, but there are a few...go forward 50 years and see


Helium atoms only need how many valence electrons to have a filled outermost energy level?

Helium is already full. Helium atoms only need 2 electrons to be full, and Helium, as an element, already has 2.


What atoms need only 2 valence electrons to have a filled out level?

Helium.