Rank the following elements by electron affinity, from most positive to most negative EA value:
tellurium, bismuth, neon, sodium, iodine
i tried
Te, Bi, Na, I, Ne
and it was incorrect.
The trend for electron affinity on the periodic table is that it increases from the bottom left of the table to the top right.
He>I>Te>Bi>Na Should be the order.
I believe David used the wrong symbol (among other issues); i.e., He is zero electron affinity (but isn't in the list but Ne is zero also) and I is the largest.
So from lowest to highest it is
Ne<Na<Bi<Te<I
The problem ask to rank from most positive to most negative and that move them to the reverse of my table above; ie.,
I>Te>Bi>Na>Ne
F is the highest EA and goes down the list. Those elements below and to the left have lower EA. By the way you can look these up on the web at www.chemelements.com and scroll down to electron shell properties.
rank the following elements by electron affinity, from most positive to most negative ea value, bismuth,neon,fluorine,cesium,oxygen
To rank the elements by electron affinity from most positive to most negative, you need to consider the trend in electron affinity across the periodic table. Electron affinity generally decreases as you move from left to right across a period and increases as you move down a group.
Let's analyze each element in the given list and determine their electron affinities:
1. Neon (Ne) - Neon is a noble gas with a full outer electron shell. Since noble gases are stable and already have a complete electron configuration, they have a very low electron affinity. Therefore, Neon has the most positive electron affinity value.
2. Sodium (Na) - Sodium is a group 1 metal, which tends to have low electron affinity since metals generally lose electrons to form positive ions. Therefore, Sodium has the second most positive electron affinity value.
3. Bismuth (Bi) - Bismuth is a post-transition metal and its electron affinity is relatively low compared to the nonmetals. Therefore, Bismuth has a slightly negative electron affinity value.
4. Iodine (I) - Iodine is a nonmetal located in group 17 of the periodic table. Nonmetals tend to have higher electron affinity values compared to metals. Therefore, Iodine has a negative electron affinity value, but it is less negative than Bismuth.
5. Tellurium (Te) - Tellurium is also a nonmetal, but it is located in group 16 of the periodic table. Group 16 elements generally have higher electron affinity values compared to group 17. Therefore, Tellurium has the most negative electron affinity value among the given elements.
Based on this analysis, the correct ranking from most positive to most negative electron affinity is:
Neon (Ne), Sodium (Na), Bismuth (Bi), Iodine (I), Tellurium (Te)