What has the lowest electron affinity?
mercury
What is the electron affinity of selenium?
195 kJ/mol.
What is the electron affinity of germanium?
119 kJ mol‑1
Why does GE have a higher electron affinity than as?
This means that the size of fluorine’s electron cloud is smaller, and it has a greater ability/tendancy to attract a bonding pair of electrons (thus a higher electronegativity) than oxygen as it has a higher nuclear charge and a smaller atomic radius.
Which element has the highest electron affinity?
Fluorine
What is the trend for electron affinity?
What is the trend for electron affinity? Electron affinity increases upward across periods of a periodic table for the groups and from left to right, because the electrons added to the energy levels get closer to the nucleus, making the nucleus and its electrons more attractive.
How do you explain electron affinity?
Electron affinity is the energy change that results from adding an electron to a gaseous atom. For example, when a fluorine atom in the gaseous state gains an electron to form F⁻(g), the associated energy change is -328 kJ/mol.
How do you determine the highest electron affinity?
Unlike electronegativity, electron affinity is a quantitative measurement of the energy change that occurs when an electron is added to a neutral gas atom. The more negative the electron affinity value, the higher an atom’s affinity for electrons.
What is the difference between electronegativity and electron affinity?
Electronegativity refers to the ability of the atoms to attract the electrons from the other elements. Electron affinity refers to the amount of energy that is liberated whenever a molecule or a neutral atom tends to acquire an electron from the other elements.
Why is electron affinity so positive for noble gas elements?
Explanation: This is because all of the Noble Gases have complete valence electron shells. Since the Noble Gases already have that ‘perfect status’ then they have an affinity of 0. Affinity is the change in energy of the atom when an electron is added.
What are the factors that affect electron affinity?
Various factors that affect electron affinity are atomic size, nuclear charge and the symmetry of the electronic configuration. Atomic size: With increase in the atomic size, the distance between the nucleus and the incoming electron also increases.
What factor does not affect electron affinity?
Electron affinities of inert gases are zero. This is due to their atoms have stable ns2 np6 configuration in their shell. Electron affinity of Beryllium, and calcium is practically zero. If the atom has fully or half-filled orbits, its electron affinity will be less.
Why the electron affinity F is lower than CL?
Fluorine, which is higher up the group then chlorine, has a lower electron affinity. This is because the electrons in the outermost shell of a fluorine atom are closer together. Energy is required to keep the gained electron in the shell, causing fluorine to have a smaller electron affinity than chlorine.
Which one N or O has more electron affinity and why?
Answer: Oxygen has more electron affinity because Nitrogen gains more stability by attaining partial configuration.
Which element has the most negative electron affinity?
Chlorine has the most negative electron affinity. According to Wikipedia [Electron affinity] , In chemistry and atomic physics, the electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.
Does P have more electron affinity than N?
Due to the increased electron-electron repulsion, N show lesser tendency to attract an electron towards them to form N – and hence the electron affinity value of N will be more positive as compared to P.
Why the electron affinity of nitrogen is less than oxygen?
As a result, you need energy to add an electron to nitrogen, and hence its electron affinity is actually negative. Because the effective nuclear charge overpowers this repulsion, and energy is being released when an electron is being added to oxygen, hence the electron affinity will be positive.
Why nitrogen has no electron affinity?
Nitrogen has a half-filled 2p subshell, so that there is one electron in each orbital. This creates an unusually stable atom because of half-shell stability. Because nitrogen is relatively stable on its own, it has a relatively low electron affinity.
Does oxygen have a higher electron affinity than fluorine?
Electron affinity follows the trend of electronegativity: fluorine (F) has a higher electron affinity than oxygen (O), and so on.