Its valence shell is full.
Na+ and neon are isoelectronic.
Because it is a noble gas, it is no reactive, as all its electron shells are filled.
Argon is inert and nonreactive because it has a full outer electron shell, making it stable and unreactive with other elements under normal conditions.
Argon has an electron arrangement of 2-8-8, with 2 electrons in the first energy level, 8 in the second energy level, and 8 in the third energy level. This configuration gives argon a full outermost shell, making it stable and unreactive.
Argon is unreactive because it has a full outer electron shell (eight electrons). This stable electron configuration makes it unlikely to gain or lose electrons to form chemical bonds with other elements. As a result, argon does not readily participate in chemical reactions.
Argon
The electron arrangement in an ion of chlorine will be similar to argon because both chlorine (Cl) and argon (Ar) are in the same period (row) of the periodic table. Neon (Ne) is in a different period and has a different electron arrangement.
Na+ and neon are isoelectronic.
Because it is a noble gas, it is no reactive, as all its electron shells are filled.
No element has the exact same election arrangement as another element. However ion can have the same election arrangement as another element. For example Chloride (Cl-) has the same configuration as Argon, and Potassium (I) (K+) also has the same configuration as argon.
Argon has an electron arrangement of 2-8-8, with 2 electrons in the first energy level, 8 in the second energy level, and 8 in the third energy level. This configuration gives argon a full outermost shell, making it stable and unreactive.
Argon is inert and nonreactive because it has a full outer electron shell, making it stable and unreactive with other elements under normal conditions.
Argon is nonreactive, including with itself.
Elements like neon and argon are nonreactive because they have stable electron configurations with full outer electron shells. This makes them very unwilling to gain, lose, or share electrons with other atoms, leading to their inert nature.
It doesn't become an argon atom because it (Cl-) still has 17 protons, and an argon atom has to have 18 protons.
The electron arrangement in a sodium ion (Na+) is similar to neon, as both have a full outer electron shell. Sodium loses one electron to achieve the stable electron configuration of neon (2,8). Argon has a full outer shell with 8 electrons, making it different from both sodium and neon.
The noble gases have a stable electron arrangement and so do not need to react to achieve stability