Which element is most stable in the periodic table?

noble gases
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.

What are the two most stable elements?

The darker more stable isotope region departs from the line of protons (Z) = neutrons (N), as the element number Z becomes larger….Tables.

Element	tin
unstable in italics odd neutron number in pink	120 Sn
118 Sn
116 Sn
119 Sn

Which is the most stable noble gas?

Noble gases with larger atoms are influenced more than those with smaller atoms. Thus, xenon and krypton are influenced more than helium and argon. Hence the hydrate of xenon, Xe. 6H2O is the most stable.

Why are noble gases stable?

Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.

Which nucleus is most stable?

Light nuclei are most stable if N=Z, while heavy nuclei are more stable if N>Z. (N→ number of neutrons, Z→ number of protons).

Are noble gases stable?

Which is the most unstable element?

Characteristics. Francium is one of the most unstable of the naturally occurring elements: its longest-lived isotope, francium-223, has a half-life of only 22 minutes.

Why are the noble gases the most stable elements?

Which is the most stable atom?

Argon 40A18r is the most stable atom .

Which element is a noble gas?

6 days ago
noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).