A noble gas is usually unreactive and has a filled valance electron shell. They are located in group 18 on the periodic table.
Noble gases are unreactive because their outermost shell, the valence shell, has a full set of eight electrons.
The noble gases helium and neon are the only elements with completely full outer shells.
The noble gases, otherwise known as group 18.
There are no 'rows' on the Periodic Table of the Elements.I assume you are talking about Group-18 of the table.Group-18 of the Periodic Table of the Elements are the noble gases. These elements have a full valence shell (8 electrons).
he outer shell for electrons is full
Noble gases are unreactive with the outermost energy level full.
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
The halogens, column 17.
Noble gases are unreactive because their outermost shell, the valence shell, has a full set of eight electrons.
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)
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.
they are unreactive as they have a full outer shell of electrons
Krypton is a noble gas and has a particularly stable electronic configuration. That's why it may be very unreactive.
The noble gases helium and neon are the only elements with completely full outer shells.
The noble gases, otherwise known as group 18.
One, the first shell.
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)