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The correct order of increasing electron affinity of the following elements is:
- a)O < S < F < Cl
- b)O < S < Cl < F
- c)S < O < F < Cl
- d)S < O < Cl < F
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The correct order of increasing electron affinity of the following ele...
O < S < F < Cl
-1.48kJ mol-1 -2.0 kJ mol-1 -3.6 kJ mol-1 -3.8 kJ mol-1
Electron affinity generally becomes more negative on moving from left to right along a period. It is because on moving across a period, the atomic size decreases.
As a result, the force of attraction exerted by the nucleus on the electron increases.
Consequently, the atom has a greater tendency to gain an electron. Hence, electron gain enthalpy becomes more negative.
Cl has more negative electron gain enthalpy than fluorine because in it the added electron goes to the smaller energy shell(n=2) and hence suffers significant repulsion from the electrons already present in this shell. And fluorine also possesses high charge density.
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The correct order of increasing electron affinity of the following ele...
Order of Increasing Electron Affinity:
Electron affinity refers to the tendency of an atom to attract an electron towards itself. The correct order of increasing electron affinity of the given elements is as follows:
a) O S F Cl
Explanation:
The correct order of increasing electron affinity can be explained as follows:
- Oxygen (O) has the least electron affinity as it has a small atomic size and a stable electronic configuration. It requires less energy to remove an electron from its outermost shell, making it less likely to attract an additional electron.
- Sulfur (S) has a slightly higher electron affinity than oxygen due to its larger atomic size and lower effective nuclear charge. This makes it easier for sulfur to attract an electron towards itself.
- Fluorine (F) has a higher electron affinity than sulfur due to its smaller atomic size and high effective nuclear charge. It has a strong attraction towards electrons and tends to form stable anions.
- Chlorine (Cl) has the highest electron affinity among the given elements due to its larger atomic size and lower effective nuclear charge. It has a stronger attraction towards electrons than fluorine and forms stable anions.
Therefore, the correct order of increasing electron affinity of the given elements is O < s="" />< f="" />< cl.="" />
Electron affinity refers to the tendency of an atom to attract an electron towards itself. The correct order of increasing electron affinity of the given elements is as follows:
a) O S F Cl
Explanation:
The correct order of increasing electron affinity can be explained as follows:
- Oxygen (O) has the least electron affinity as it has a small atomic size and a stable electronic configuration. It requires less energy to remove an electron from its outermost shell, making it less likely to attract an additional electron.
- Sulfur (S) has a slightly higher electron affinity than oxygen due to its larger atomic size and lower effective nuclear charge. This makes it easier for sulfur to attract an electron towards itself.
- Fluorine (F) has a higher electron affinity than sulfur due to its smaller atomic size and high effective nuclear charge. It has a strong attraction towards electrons and tends to form stable anions.
- Chlorine (Cl) has the highest electron affinity among the given elements due to its larger atomic size and lower effective nuclear charge. It has a stronger attraction towards electrons than fluorine and forms stable anions.
Therefore, the correct order of increasing electron affinity of the given elements is O < s="" />< f="" />< cl.="" />
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The correct order of increasing electron affinity of the following ele...
Correct answer is C because electron affinity inversly propotional to atomic size so atomic size of sulpher is more than that of O
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