Does SI have a high electron affinity?
The nuclear charge increase along the series so the electron affinities will increases: Si- < P- < S-. The electron affinity of Si- will also be further decreased because addition of an electron requires pairing again. However, this will not affect the order as Si- is already has the lowest electron affinity.
What is the electron affinity of SI?
For example, a silicon crystal surface has electron affinity 4.05 eV, whereas an isolated silicon atom has electron affinity 1.39 eV.
Which has more electron affinity C or Si?
Explanation: When an electron is added to a neutral atom it results in the formation of a gaseous negatively charged ion. But, out of carbon and silicon, the electron affinity of silicon is greater than carbon because silicon has empty 3d orbital.
Which has a higher electron affinity?
Thus, nonmetals have a higher electron affinity than metals, meaning they are more likely to gain electrons than atoms with a lower electron affinity. For example, nonmetals like the elements in the halogens series in Group 17 have a higher electron affinity than the metals.
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 of the following has lowest electron affinity?
The correct answer is Argon. Argon has all filled orbitals as well as a filled valence shell. As a result, it doesn’t want to lose or gain any electrons. Hence, argon has the lowest electron affinity.
What has the lowest electron affinity?
mercury
What is the lowest electron affinity? Metals are more likely to lose electrons than they are to gain them. Of the metals, mercury has the lowest electron affinity.
What is high electron affinity?
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 does electron affinity increase from bottom to top?
The electron affinity is the energy change when an atom gains electrons. The general trends of the electron affinity are that it increases from left to right across the periodic table due to an increase in the nuclear charge, and it increases from bottom to top due to the effect of atomic size.
What does a high electron affinity mean?
What is the electron affinity of an element?
The electron affinity of an element is the energy change which accompanies the addition of an electron to an atom in the gas phase to produce a negatively charged anion: Electron affinities are usually negative values, since energy is usually released (an exothermic energy change) when an electron is added to a neutral atom.
Why does GE have higher electron affinity than SI?
Ge has higher conductivity than Si. Because at room temperature the electron and hole mobility for Ge is larger than those of Si. Another explanation is the lower band gap of Ge than Si. What is the charge on an electron in SI units?
Are there any smooth trends in electron affinity?
The trends for electron affinity are not as smooth as those for atomic radius , ionization energy, and electronegativity, as can be seen on the following graphs.
Why does electron affinity decrease as the group goes down?
Going down the group the electron affinity should decrease since the electron is being added increasingly further away from the atom. Less tightly bound and therefore closer in energy to a free electron.