0
Why the value of electron affinity is positive for noble gases?
Wiki User
∙ 11y ago
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. They will not accept any more electrons and hence they have positive electron affinity.
Wiki User
∙ 11y ago
Wiki User
∙ 16y agoThis is because the electron is being added to an already negatively charged ion. Thus, it requires energy to overcome the repulsion.
Wiki User
∙ 11y agoThere must be an input of energy to overcome the repulsive forces between the (negative) electron and the negative ion
Add your answer:
Earn +20 pts
Why are the noble gases not included in electron affinity?
Noble gases have completely filled orbitals are are stable. they do not accept electrons and hence are not included in electron affinity.
Do noble gases have electron affinity?
The valence electron shell of noble gases id completely filled; as a consequence the affinity for electrons and the chemical reactivity are at an extremely low level.
Why don't the noble gases have an electron affinity value?
they dont want any electrons cuz they got no room to put them
What group of elements give off the most energy when they gain an electrons?
Group 8A, the noble gases because they have high electron affinity.
Definition of electron affinity?
The energy change that occurs when an electron is added to a neutral atom. This is usually exothermic. Noble Gases are excluded from this. Equation: X(element)+e-(electron)---------> X-1+ energy
Why are the noble gases not included in electron affinity?
Noble gases have completely filled orbitals are are stable. they do not accept electrons and hence are not included in electron affinity.
Do noble gases have electron affinity?
The valence electron shell of noble gases id completely filled; as a consequence the affinity for electrons and the chemical reactivity are at an extremely low level.
What is the electron affinity of argon?
The electron affinity of argon, like all noble gases, is 0, or very close to it, due to its chemical inertness.
Why don't the noble gases have an electron affinity value?
they dont want any electrons cuz they got no room to put them
What group of elements give off the most energy when they gain an electrons?
Group 8A, the noble gases because they have high electron affinity.
Definition of electron affinity?
The energy change that occurs when an electron is added to a neutral atom. This is usually exothermic. Noble Gases are excluded from this. Equation: X(element)+e-(electron)---------> X-1+ energy
What is the electron affinity value and which elements have a zero value?
Noble gasses
Why are the noble gases non reactant?
Noble gases have atoms with the valence electron shell filled.
What is it called when an electron has 8 electrons in its outer shell?
when an element has 8 electron in outer shell it is said to be inert. inert gases are called noble gases.
What is the electron configuration for noble gases?
[noble gas]ns2 np6
Are noble gases diatomic?
Noble gases have full outer electron shells, thus have no 'desire' to combine with anything, even its "brothers."Noble Gases are not diatomic.
What happens when a noble gas loses an electron?
It becomes unstable, so noble gases will not lose or gain electron
