Tomm Jeff
Which Of The Following Has The Smallest Atomic Radius – Which of the following pairs of atoms has the lowest electron affinity? a) Ca, K b) I, F c) Li, Ra. I know nothing about the electron affinity of all elements
Electron affinity (EA) indicates how much energy is released when a gaseous neutral atom gains an electron from an anion.
Which Of The Following Has The Smallest Atomic Radius
So, if you have to compare two elements that exist at the same time, the one on the right will have the larger EA. For two elements in the same group, the one closer to the top will have the larger EA.
Answered: 5. An Atom Of Which Of The Following…
Electron affinity is the ability to attract an electron to the outer shell of an atom, either to become a 1-ion or to become a negative ion. 2- etc.
The ability to do this increases with nuclear charge (ie, more protons in the nucleus) and with less charged inner shells, resulting in shielding. N.B. These two factors also lead to a smaller radius, so a smaller radius corresponds to a higher electron affinity.
This means that electron affinity increases as you move from left to right across a period (same number of shells, more protons) and decreases as you go down a group (more shells and larger radii with increasing number of protons).
Because electron affinity is associated with the formation of negative ions, it is not usually considered a metal. I has an electron affinity of -295kJ/mol, compared to -328kJ/mol for F, indicating that F has a more exothermic first electron affinity.
D Illustration Atomic Structure. Atom Is The Smallest Level Of Matter That Forms Chemical Elements Stock Illustration
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