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Why the addition of two electrons or removal of one electron requires more energy in oxygen atom?
Wiki User
∙ 12y ago
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.
Wiki User
∙ 12y ago
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Which atom requires the least energy for the removal of the most loosely bound electron a.Sn b.Sr c.Be d.Br?
C. Be. Beryllium.
How does the size of an atom change when it is converted to an anion and a cation?
A cation is an element that loses electrons in order to achieve a pseudo-noble gas electron configuration:Hence, when a cation loses electrons it has an uneven number of (p+) and (e-). The protons then pull harder on the electrons or (e-) because there is more positive charged subatomic particles than there are negatively charged subatomic particles. The remaining electrons are closer to the nucleus making the cation smaller in size than the original atom.
Why formation of di and tri-negaive ions is endothermic process?
when an electron is added to an atom, uninegative ion is formed and enrgy is released. the addition of one more electron is difficult because negative charge or electronic cloud repels it strongly, to overcome this repelsion an amount of energy is needed, which is obtained by surroundings so its an endothermic reaction.
What is positive ionization?
a process where in positive ions are formed. Here, the electrons orbiting the outer-most shell of an atom are knocked out, resulting in the atom having more protons than electrons. This creates a positive ion.
Reduction is a chemical reaction that removes what from a substance?
Reduction can be defined in several ways, but the most general is gain of electrons (or a bigger share in electrons). For instance, when you drop a piece of zinc into copper sulfate solution, the zinc atoms give electrons to the copper(II) ions, so the copper ions are reduced. Zn + Cu2+ = Zn2+ + Cu Of course, the zinc is oxidised at the same time. As an old Frank Sinatra has it 'You can't have one without the other!' When it comes to electrons, Oxidation Is Loss, Reduction Is Gain (OILRIG).
What involved in redox reaction?
REDoxREDUCTION:-addition of electron or removal of oxygen or addition of hydrogen is called reduction.oxidation:-removal of electron,addition of oxygen and removal of hydrogen is called oxidation.Edit : the transfer of electrons between reactants is one of the choices.
What is is involved in Red-ox reactions?
REDoxREDUCTION:-addition of electron or removal of oxygen or addition of hydrogen is called reduction.oxidation:-removal of electron,addition of oxygen and removal of hydrogen is called oxidation.Edit : the transfer of electrons between reactants is one of the choices.
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.
How does the oxidation number indicate if an electron will be lost or gain by the bond in an atom?
Oxidation number describes gain of electrons. It involves addition of oxygen and removal of hydrogen.
Why na and mg have same number of electrons but removal of electron from mg requires more energy?
na is more electropositive. it is so as electropositivity decreases from left to right across a group
Is it true that A change of state requires the addition or removal of heat energy?
Yes, that's correct.
What do you mean by reduction in chemistry?
1. Removal of oxygen from a molecule. 2. Addition of hydrogen atoms. 3. Addition of electrons to atoms Example:Photosynthesis.
Why is the 2nd ionisation energy of Cr higher and not lower than of Mn?
The electron configuration of a neutral chromium atom is [Ar]3d54s1. The electron configuration for manganese is [Ar]3d54s2. The first electron removed from a chromium atom is the single 4s electron, leaving the electron configuration [Ar]3d5. The first electron removed from a magnesium atom is one of the 4s2 electrons, leaving the electron configuration [Ar]3d54s1. Removal of a second electron from a chromium atom involves the removal of one of the 3d electrons, leaving a configuration of [Ar]3d4, which is not a very stable configuration, and requires more energy to achieve. Removal of a second electron from a magnesium atom involves the removal of the second 4s electron, leaving a configuration of [Ar]3d5, which is more stable and requires less energy to achieve.
Which atom requires the least energy for the removal of the most loosely bound electron a.Sn b.Sr c.Be d.Br?
C. Be. Beryllium.
Why do some atoms lose electrons more often then others?
due to large size of atom the pull of nucleus on tne electrons decreases so removal of electron become easier
What is Electrification which confers the same charge is electrification by?
electrification is processes of charging in which neutral body is charged by removal or addition of electrons
The removal of an electron results to what charge?
+1. Because an atom normally has an equal number of protons and electrons, it is neutral. By removing a negative (the electron), the atom is then positive. The more electrons you remove, the more positive the atom becomes. Then, it is called an ion, such as Cu is copper, but Cu2+ is a copper(II) ion; it is a copper atom that has lost two electrons.
