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A noble gas is usually unreactive and has a filled valance electron shell. They are located in group 18 on the periodic table.

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Q: What is unreactive and has a full shell on the periodic table?
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Which group on the periodic table is unreactive because its outermost energy level is full?

Noble gases are unreactive with the outermost energy level full.


What is significant about the configuration for group 0- 8 in the periodic table?

They have a full outer energy level ( full energy shell for GCSE and below ) which makes them completely unreactive* which is why they are called the noble gasses. *Xe can actually react


What group in the periodic table of elements that has a full outer shell?

The halogens, column 17.


Explain why noble gases are unreactive in terms of electron shells?

Noble gases are unreactive because their outermost shell, the valence shell, has a full set of eight electrons.


Why is helium a friend of neon on the periodic table?

They both have full outer shells, and as a result, they are both very unreactive elements (as they already have a noble gas electron configuration)


Why is the structure of an atom within the given group in a periodic table similar?

Each row of the periodic table gives you one full electron shell, then you start a new shell when you start a new row. In each group you have the same number of electrons in the outer shell, you just get more shells as you go down the table.


Why is noble gasses the least reactive?

they are unreactive as they have a full outer shell of electrons


Why is krypton unreactive?

Krypton is a noble gas and has a particularly stable electronic configuration. That's why it may be very unreactive.


What element would have a full valence shell on the periodic table?

The noble gases helium and neon are the only elements with completely full outer shells.


What group on the periodic table has a full outer shell of valence electrons?

The noble gases, otherwise known as group 18.


How many completely full electron shells do the elements in the second row of the periodic table contain?

One, the first shell.


Are noble gasses inert gasses?

Noble gases have a full valence shell. Reactions often take place in order for an atom to gain a full valence shell and then become chemically unreactive. Since the noble gases already have a full valence shell, they are unreactive (although some exceptions do aply)