The element in group 18 with the smallest radius is helium. As the lightest noble gas, helium has a very small atomic size due to its two protons and two electrons, which create a strong effective nuclear charge that pulls the electrons closer to the nucleus. This results in a smaller atomic radius compared to other elements in the same group.
group 18
No group 18 element can react with fluorine under normal conditions, as they have a stable and inert configuration with full valence shells.
Many isotopes have 18 neutrons.
8
argon
When the element moves from group 18 to group 1, it moves to a new period. Each period has a one more electron shell than the previous. The group 1 element has one more electron shell than the group 18 element; hence, it's atomic radius is greater.
The element in group 18 period 5 is Xenon (Xe).
No, xenon (Xe) is not a transition element. It is a group 18 element or noble gas.
Helium is the lightest member in group 18.
group 18
group 18
No, xenon (Xe) is not a transition element. It is a group 18 element or noble gas.
Radon (Rn) has the most protons of any element in Group 0 (18) with 86 protons. However, if or when Ununoctium is officially confirmed, that will become the element with most protons in that family, with 118 protons.
group 18
No group 18 element can react with fluorine under normal conditions, as they have a stable and inert configuration with full valence shells.
Many isotopes have 18 neutrons.
8