It does.
Yes, that is part of the 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
Sr has a relatively low electron affinity. Electron affinity is the energy change when an atom gains an electron to form a negative ion, and for strontium, this energy change is lower compared to other elements.
The halogen with the least-negative electron affinity is astatine. Electron affinity and electronegativities decreases down a group. Since astatine is the last halogen located in Group 17 as you move down the column from fluorine, it has the least negative electron affinity.
Fluorine has higher electron affinity than any other element.
Selenium has a lower electron affinity than germanium. Electron affinity is the energy released when an atom gains an electron to form a negative ion. In general, electron affinity tends to decrease as you move down a group in the periodic table, which is why selenium has a lower electron affinity than germanium.
Chlorine has a negative second electron affinity because it releases energy when gaining an additional electron. This makes it less likely to accept a second electron compared to its first electron affinity, which is positive.
To create an electron affinity reactor you will have to use the second ionization energy.
Helium has no electron affinity.
The first electron affinity is generally greater than the second because the process of adding an electron to a neutral atom is typically more favorable than adding a second electron to an already negatively charged ion. When the first electron is added, it experiences relatively less repulsion from existing electrons. However, when a second electron is added, it encounters increased electron-electron repulsion due to the negative charge of the ion, making the process less exothermic and thus resulting in a lower electron affinity.
It is positive. In relation to oxygen at least.
chloline
The electron affinity of germanium is considered to be moderate. Germanium is a metalloid element with an electron affinity that falls between that of metals and nonmetals.
Yes, that is part of the definition of electron affinity.
The electron affinity of sulfur is -200 kJ/mol.
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
Yes. It's true. Chlorine has the highest electron affinity, then Fluorine, Bromine and Iodine