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Why group 18 noble gases have positive electron affinity values?
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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 group of elements give off the most energy when they gain an electrons?
Group 8A, the noble gases because they have high electron affinity.
What energy changes when a neutral atom gains an electron?
When an electron is acquired by a neutral atom, the energy change is called electron affinity. Neutral atoms with an s2p6 electron configuration in the highest energy level are best classified as gases.
Why the value of electron affinity is positive for noble gases?
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.
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 group of elements give off the most energy when they gain an electrons?
Group 8A, the noble gases because they have high electron affinity.
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.
What energy changes when a neutral atom gains an electron?
When an electron is acquired by a neutral atom, the energy change is called electron affinity. Neutral atoms with an s2p6 electron configuration in the highest energy level are best classified as gases.
Why the value of electron affinity is positive for noble gases?
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.
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 don't the noble gases have an electron affinity value?
they dont want any electrons cuz they got no room to put them
Why is electron gain enthalpy of inert gases positive?
Inert gases are the most stable ones, so if we try to add another electron, the stable electronic configuration is disturbed. So, we have supply energy for this process. Hence, electron gain enthalpy is positive.
Why do helium neon and argon have no electronegativity values?
Electronegativity is a measurement of the power of an atom to attract electrons. The Noble gases, like helium, neon, and argon all have full valence shells. This means they are very stable and have no need to bond. There are several methods of calculating electronegativity, and some of those methods do give values for the Noble gases. However, these numbers are not generally meaningful since the noble gases do not have a measurable electron affinity. Several of the noble gases can form bonds under special curcumstances.
What is chemical affinity?
I'm quite sure what is being referred to here is "electron affinity". Electron affinity is a routine college freshman chemistry concept. So, out of a textbook: "The energy that accompanies the addition of an electron to a gaseous atom to form an anion" An anion is a negatively charged ion. The most electro-negative element, fluorine, releases the most energy when it reacts with an electron. Fluorine, like oxygen, nitrogen and most gases (except the "inert" or "noble" gases) are DI-atomic. So fluorine is F2 (the 2 should be a subscript). But this reaction assumes mono-atomic fluorine (also called "nascent"). The the reaction is: F + e- ---> F- And this releases 328 kilo-joules of heat per mole.
Explain why the noble gases have high ionization energies?
Noble gases have filled shells, which is the most stable configuration for an atom. Removing an electron from a noble gas would increase the energy more than if you removed an electron from, for example, nitrogen.
