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First EA is usually exothermic as energy is released when the nucleus attarcts an electron is larger than the energy taken in to overcome their inter-electronic repulsion. Second EA is always endothermic since electron is added to a negative ion. Energy is needed to overcome the repulsion between the two negatively charged species.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agobecause when we add one electron to the atom there is enough space that can adjust the coming electron in the shell but in case of 2nd electron affinity it is positive the reason for this is that while adding
2nd electron we have to provide energy because there is repulsion between electrons already present so cant no add the another electron easily so we have to provide energy for adding to the atom so 2nd electron affinity is always positive
Wiki User
∙ 12y agoit has 6 elecrtons in it outer shell, it needs 8 to be stable
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Describe the Lewis dot structure for water's electron pair geometry?
One Oxygen in the middle, with two hydrogen, one on each side. Two electron pair, one on each side of the oxygen, but not the same side as the hydrogen.
What stage of cell respiration uses oxygen?
The oxygen molecules that you breathe are actually used in the last part of aerobic respiration. They are the final electron acceptors in electron transport chain.
What type of bonding occurs when two oxygen atoms merge?
When two oxygen atoms merge, they form a covalent bond. In a covalent bond, the atoms share electrons to complete their outer electron shells. This allows both atoms to achieve a more stable electron configuration.
Does the addition of two electrons or removal of one electron require more energy for an oxygen atom?
when adding two electrons to the oxygen atom yep! it requires more energy because it has to take them from another atom so it will be removing an electron using more ionization energy to do the work.and we must remember that oxygen needs two electrons to attain its valency then it needs to take two from another atom to be fully filled and without the two electrons it will still lack electron to be stable.this means adding or removing requires energy.
What does cellular respiration have to do with oxygen?
Oxygen is necessary for the production of ATP, energy used by the cell in areas such as protein production and active transport. They are the final electron recipient in the ETC, using two H+ atoms to form H2O.
Why the addition of two electrons or removal of one electron requires more energy in oxygen atom?
Type your answer here... when adding an electrons to oxygen it needs more energy in electron affinity in order to attract electrons from other atoms to be stable.and we know that oxygen is in short of two electrons.so in the other hand when an electron is removed from oxygen it will be unstable and will be needing more ionization energy to be able to remove an electron to it.Thus mean indeed when adding or removing electrons for oxygen it requires energy.
Why the electron affinity is important?
Electron affinity for an atom is important to make it as a molecule.where atom is a small single one and molecule is the combination of two or more atoms.electron affinity is just a desire for attraction of electron by the atom.for example : We should have some affection for others to become their close relation like friends and live together in the same way a single atom should have desire [that is framed as ELECTRON AFFINITY] for electrons to be attached to form molecule
How many time greater is the affinity of hemoglobin for carbon monoxide greater than the affinity of hemoglobin for oxygen?
The affinity of hemoglobin for CO is roughly 20,000 times greater than that of oxygen in vitro. In vivo, the affinity of hemoglobin for CO is roughly 200-225 greater than that of oxygen. ------------------------------------------------------------------------------------------------- O2 has stronger bond than CO. Therefore, the oxygen in CO loves the iron in the hemoglobin as iron ends with two electrons which complete the 6 electrons in the oxygen. In vivo, the affinity of hemglobin for CO is about 153 from 141x153/141. by amin elsersawi
How many electron shells have electrons in them for oxygen?
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
What has to happen in order for an atom to lose two electrons?
The contact with an atom having a high affinity for electrons.
What does oxygen need to do in order to to achieve a stable electron configuration?
Oxygen atoms need to share or gain two electrons in order to achieve a stable electron configuration.
Why does an oxegyn atom bond with two hydrogen atoms very easily?
oxygen has 6 valence elctrons and needs two more to complete its electron shell and hydrogen is just what it needs hydrogen has one electron which makes a complete electron shell for oxygen.
What are two ways that covalent polyatomic particles can become ions?
If an element with a high electron affinity (like oxygen) is part of a polyatomis molecule. one or more of the missing valence e' can sometimes be filled by a nearby extra e' instead of sharing elctrons with other atoms:)
What are two prosseses that use oxygen?
cellular respiration and electron transport chain
What is the electron geometry of OF2?
Electron geometry for this is tetrahedral. There are two O-F single bonds, which makes 2 electron groups. There are two lone pairs around oxygen, which make up the last two electron groups. Molecules with four electron groups has a tetrahedral Electron geometry.
Describe the Lewis dot structure for water's electron pair geometry?
One Oxygen in the middle, with two hydrogen, one on each side. Two electron pair, one on each side of the oxygen, but not the same side as the hydrogen.
Why are oxygen and potassium reactive?
Oxygen can gain two electrons. Potassium form cation by loosing an electron. So they are reactive.
