The outer (valance) ring is full.
Valency is zero, being a noble gas, does not react because of that fact.
valency of argon is 0 that the shell is completely filled
Neon (Ne) is a noble gas and has a valency of 0. It is stable with a full outer shell of electrons.
Noble gases such as helium, neon, argon etc have completely filled valence orbitals, and hence have sable electronic configuration. They do not form bond with other elements. In other words, they are chemically inert and have zero valency.
Helium, neon, and argon have a zero valency because they have a full outer electron shell (valence shell). This makes them stable and unreactive because they do not need to gain, lose, or share electrons to achieve a full valence shell. Since they already have a complete set of electrons, they do not form chemical bonds easily.
Valency is zero, being a noble gas, does not react because of that fact.
helium's valency is zero as id does not combine with other elements
valency of argon is 0 that the shell is completely filled
Neon (Ne) is a noble gas and has a valency of 0. It is stable with a full outer shell of electrons.
Noble gases such as helium, neon, argon etc have completely filled valence orbitals, and hence have sable electronic configuration. They do not form bond with other elements. In other words, they are chemically inert and have zero valency.
Helium, neon, and argon have a zero valency because they have a full outer electron shell (valence shell). This makes them stable and unreactive because they do not need to gain, lose, or share electrons to achieve a full valence shell. Since they already have a complete set of electrons, they do not form chemical bonds easily.
The noble gases.
The noble gases have the least valency which is zero. It is because thay have a complete shells.
Noble gases were considered elements with zero valency; but today a significant number of noble gases (especially xenon) are known.
The valency of sulfur in FeS2 is -2. This is because the overall charge of FeS2 is zero, and iron has a positive valency of +2. Therefore, sulfur must have a valency of -2 to balance the charge.
Phosphorus has a valency of 3 because it has 5 valence electrons in its outer shell. By sharing/gaining/losing 3 electrons, it can achieve a stable electron configuration similar to the noble gas neon. This results in a valency of 3 in chemical reactions.
the valency of argon is zero(0) because it is a noble gas i.e it does not react to any other element