What element has the highest electron affinity?
Chlorine
Chlorine has the highest electron affinity among the elements. Its high affinity can be attributed to its large atomic radius, or size. Because chlorine’s outermost orbital is 3p, its electrons have a large amount of space to share with an incoming electron.
Why does sodium have a electron affinity?
On this basis the electron affinity of sodium is calculated to be +1.2 ev and therefore the negative ion is stable. The decrease in energy relative to the Hartree result is mainly due to the increased separation and consequent lowered interaction potential energy of the (3s) electrons.
Which has higher electron affinity sodium or potassium?
Among sodium and potassium electrons affinity of potassium is least as the size of potassium is greater than the size of sodium (more will be the size less will be the holder of the nucleus). So the correct answer is option c that is $K$.
Which has more electron affinity fluorine or sodium?
Thus electron affinity increases from fluorine to neon and decreases for sodium because as we move down to the group electron affinity decreases. Sodium is present more left in the periodic table that’s why it has smaller electron affinity.
Which elements have no Affinity for electrons?
Explanation: Neon, for example, has its outer shell full, because it’s a noble gas. It has already satisfied its filling of electrons, so it doesn’t want anymore (or any less). This is true of all noble gases.
Why sodium has more electron affinity than Aluminium?
Answer: Electron affinity is the amount of energy released when an electron is added to an isolated gaseous atom, resulting in the formation of an anion. … Hence more energy is released. —→ Electron affinity increases. Hence , EA of Al is more than EA of Na.
Which one of the following has least electron affinity?
Thus, oxygen has the lowest electron affinity.
How do you determine electron affinity?
Which has more electron affinity lithium or sodium?
The electron affinity of sodium is lower than that of lithium, while the. electron affinity of chlorine is higher than that of fluorine.
What is the electron affinity of boron?
Electron Affinity of Boron is 26.7 kJ/mol.
How do you know which has higher electron affinity?
Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons.
What does high electron affinity mean?
Based on this sign convention, this means that a higher electron affinity indicates that an atom more easily accepts electrons. A lower electron affinity indicates that an atom does not accept electrons as easily.
Which has higher electron affinity fluorine or neon?
In the modern periodic table, electron affinity increases on moving left to right in a period while it decreases on moving down the group. … Thus, noble gases have the least electron affinity in a period. Hence, we can conclude that in a period, fluorine (halogen) has higher electron affinity than neon (noble gas).
Why is there a decrease in electron affinity going from lithium to sodium?
So they have less electron affinity. This is why sodium has less electron affinity than lithium because it is a larger atom, it has a it has more electrons. So whenever it is given an extra electron it does not have as much affinity for that electron.
Which group has the highest electron affinity within a period?
Electron affinity generally decreases going down a group and increases left to right across a period. Nonmetals tend to have the highest electron affinities.
Which has the highest electron affinity in period 2?
Among the period 2 element the one which has high electron affinity is: Lithium.
Why is electron affinity highest in the top right corner?
We are looking at this in terms of across the period, not down a group. From left to right, the nuclear charge increases, resulting in a greater attraction to incoming electrons. So, we can say that from left to right across a period, the electron affinity increases upward.
Which has higher electron affinity oxygen or fluorine?
Electron affinity follows the trend of electronegativity: fluorine (F) has a higher electron affinity than oxygen (O), and so on.
Which element has higher electron affinity fluorine or chlorine?
Fluorine has seven electrons in 2p-subshell whereas chlorine has seven electrons in its 3p-subshell. … Since, energy released during the formation of Cl− (g) ion is more than that released in case of F−(g) ion, the electron affinity of chlorine is more than that of fluorine.
Which of the following has highest electron affinity NPF?
So chlorine has highest electron affinity.
Which element has the highest electron affinity in the third period?
The element with highest electron affinity is Chlorine. It belongs to 17th group and 3rd period.
Why does sodium have the largest atomic radius?
The number of energy levels increases as you move down a group. … This means that its valence electron is in the second energy level. Sodium is in period 3 in group 1/IA, so its valence electron is in the third energy level, therefore it has a greater atomic radius than lithium.
Which of the following has the least electron affinity in kJ mol 1?
So, out of the given elements to us, nitrogen has the lowest electron affinity.
Which has more electron affinity chlorine?
Chlorine and Electron Affinity
Fluorine is a small atom with a small amount of space available in its 2p orbital. … Therefore, chlorine has a higher electron affinity than fluorine, and this orbital structure causes it to have the highest electron affinity of all of the elements.