helium has zero and add one as you go down the periodic table
Noble gases, such as helium, neon, and argon, typically do not form chemical bonds with other atoms due to their stable electron configurations.
They have to gain 1 electron. Halogens have 7 electrons in their valence shell and noble gasses have 8.
Noble gases rarely combine with each other or with other elements due to their stable electron configuration. These elements already have a full outer electron shell, making them very unreactive under normal conditions.
Typically, elements with higher atomic numbers have better shielding due to more inner electron shells that shield the outer electrons from the positive charge of the nucleus. For example, noble gases like xenon or radon would have better shielding compared to elements with lower atomic numbers like lithium or carbon.
Because they are noble gasses. All of the noble gasses have a full valence shell, meaning that they have little tendency to gain or lose electrons. Any element, which is going to be a gas, in the 18th column of the periodic table are noble, or inert.
No, not all noble gases have at least 3 electron shielding layers. The noble gas helium (He) has only two electron shielding layers, while the remaining noble gases (Neon, Argon, Krypton, Xenon, and Radon) have three or more electron shielding layers.
No. If waht is meant are the layers below the outer layer then:- He has no shielding layer (electronic configuration 1s2) Neon has only one, electronic configuration 1s2, 2s2 2p6
noble
No. Not sure what you mean by a shielding layer- I would take this as the filled electron shells below the "outer", highest energy layer-- He has none, Neon has one , Argon has two.
The electron configuration of the noble gasses are such that the valence shell (the outer most shell of electrons) is filled up with eight electrons. the outermost shell of electrons can only fit eight and the noble gasses already have all eight.
No. He the lightest has only one 1s2. Neon is 1s2 2s2 2p6 so depending what you understand by the term layers - it either has two (complete shells) or three.
All of the noble gasses have full outer electron shells - rendering them extremely nonreactive. Their electron configuration is what places them in the group on the periodic table that we have designated "noble gases".
Noble gases, such as helium, neon, and argon, typically do not form chemical bonds with other atoms due to their stable electron configurations.
They have to gain 1 electron. Halogens have 7 electrons in their valence shell and noble gasses have 8.
Noble gasses are historically known as inert gasses - so true
Noble gases can be found in the atmosphere; the air on Earth is partly composed of the noble gasses.
The noble gasses all have a filled outer electron shell of eight electrons, except helium which has two electrons. Since their outer electron shells are filled, they are less likely to react with other atoms.