It is helium. It's atomic number is 2, so it has 2 protons and therefore 2 electrons.
Other elements can acquire a noble gas configuration by either gaining or losing electrons. Elements on the left side of the periodic table, such as alkali metals, tend to lose electrons to achieve a noble gas configuration. Elements on the right side of the periodic table, such as halogens, tend to gain electrons to achieve a noble gas configuration. Elements in the middle of the periodic table may gain or lose electrons to acquire a noble gas configuration, depending on the specific element and its properties.
Oxygen is closest to the noble gas neon (Ne) on the periodic table.
Krypton is a noble gas. It has 8 electrons in the outermost shell. So it is in the last column of the periodic table.
An atom of silicon needs to gain 4 electrons in its 3p sublevel to attain the noble gas electron configuration of argon, the noble gas in period 3 of the periodic table.
There are 6 noble gases in periodic table. The common one is helium.
The noble gases are in column 18 of a wide form periodic table.
An atom with atomic number n needs to gain enough electrons to have the same number of electrons as the nearest noble gas in the periodic table. This would typically involve gaining 8 electrons to achieve the stable electronic configuration of a noble gas.
The Alkaline Earth metal which comes just after the noble gas
Argon
No, Ni2+ does not have a noble gas configuration. A noble gas configuration is attained when an atom has a full valence shell of electrons, like the noble gases in Group 18 of the periodic table. Ni2+ has lost electrons to achieve a stable electron configuration but does not have a full valence shell like a noble gas.
Yes. Radon (Rn) is classified as a noble gas.
Argon is the noble gas that comes in the periodic table after chlorine.