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That is the trend of the Periodic Table. From left ( where the metals are ) to the right upper corner ( where the most electronegative nonmetals are )

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Q: Do nonmetals have always higher electron affinity than metals?
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Do Nonmetals with lower electron affinity have higher reactivity?

No. The most reactive non metal, fluorine, has the highest electron affinity.


Which has higher electron affinity Iodine or bromine?

Bromine has a higher electron affinity.


Which has higher electron affinity fluorine or chlorine?

Fluorine has higher electron affinity than any other element.


Who has higher electron affinity between bromine and Iodine?

According to Zumdahl, Group 7A elements (halogens) follow the expected behavior or periodicity as you follow top to bottom. The numbers (top to bottom) are getting closer to 0, so they are decreasing in electron affinity. Bromine has a higher negative # therefore it is a higher electron affinity.---papajohn


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 elements has the largest electron affinity?

AnswerElectron affinity is the energy released when we add an electron to the outermost orbit of the atom. Halogens are the higher in electron affinity, and chlorine has the higher electron affinity than rest of the halogens. The irregularity in the electron affinity trend between Cl and F is due to the small size of the F atom. Although F definitely has a higher attraction for an electron than Cl (as evidenced by its high electro negativity value), the small size of the F atom means that adding an electron creates significant repulsion. Since electron affinity is an energy measurement, the total energy associated with electron affinity winds up being the energy that is released by the electron binding to the nucleus, minus the energy involved in overcoming the electrical repulsion in the outer shell.This makes the fluoride anion so formed unstable due to a very high charge/mass ratio. Also, fluorine has no d electrons which limits its atomic size. As a result, fluorine has an electron affinity less than that of chlorine.


Why do non metals have higher ionization energies than metal?

Ionization energy is the energy needed to remove an electron. Elements other than transition metals gain or lose electrons from the s and p orbitals in order gain the more stable electron configuration of a Noble gas. Metals lose electrons to become isoelectronic (that is have the same electron configuration) to a noble gas (previous to them in the periodic table), while nonmetals tend to gain electrons in order to become isoelectronic to a Noble gas (next highest on the periodic table). Since ionization energy is the energy needed to REMOVE an electron, it is low for metals which form positive ions by losing electrons to become more stable, but very high for nonmetals that tend to gain, NOT LOSE, electrons. Most transition metals tend to lose electrons as well (other than Rhenium). Transition metals lose electrons from the d orbital, but still form positive ions, so their ionization energy is also usually lower than nonmetals.


What are the trends and exceptions to the trends in electron affinity?

Down the group electron affinity decreases Across a period electron affinity increases. However, it should be noted that chlorine is having higher electron affinity than flourine due to the small size of fluorine atom)


Does copper or gold have a higher electron affinity?

Gold; gold has the highest electronic affinity of any atom other than the halogens, due to relativistic effects.


Why sulphur have higher negative electron affinity than oxygen?

Due to small size and high electron density of oxygen compared to sulphur, interelectronic repulsion is higher in oxygen, resulting in less energy being released when an electron is added to oxygen, due to lesser stability after electron is added, which is due to the interelectronic repulsion in the small oxygen atom. Hence electron affinity value is lower. It is an abnormality and exception to the general periodic trend of electronic affinity values.


How does electron affinity change as you go from family 1 to 18?

Generally it gets higher/stronger but there are exceptions.


How do you read the electrostatic series?

The electrostatic series ranks elements in order of their ability to gain or lose electrons. The list shows which elements have a higher affinity for electrons (indicating electron gain) and which have a lower affinity (indicating electron loss). This ranking can help predict the direction of electron transfer in chemical reactions.