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Why na and mg have same number of electrons but removal of electron from mg requires more energy?
Wiki User
∙ 10y ago
na is more electropositive. it is so as electropositivity decreases from left to right across a group
Wiki User
∙ 13y ago
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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.
Are electrons located in energy levels or electron cloud?
Electrons are located in energy levels within the electron cloud.
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.
What describes the energy possessed by electrons?
The energy of electrons is expressed in eV (electron volts).
Why formation of do negative ion is an endothermic process?
endo process because it involves breaking of bonds ( requires energy thus energy from surroundings are absorbed)
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.
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.
If electrons have the most energy in an atom electrons in an electron cloud electrons in the outermost electron shell electrons in the innermost electron shell electrons in the nucleus?
Electrons in the outermost energy shell (valence shell) have the most energy.
Is atoms with high ionization energy allow their electrons to be easily taken?
This is false. The ionization energy is the amount of energy that is required to remove the electron. Therefore, if it requires more energy, it is harder to remove the electron.
Which type of energy requires the movement of electrons?
Electric energy requires the movement of electrons.
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.
Are electrons located in energy levels or electron cloud?
Electrons are located in energy levels within the electron cloud.
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.
An electron in the outermost energy level of an atom is a?
The outermost electrons are called VALENCE electrons.
What describes the energy possessed by electrons?
The energy of electrons is expressed in eV (electron volts).
Why formation of do negative ion is an endothermic process?
endo process because it involves breaking of bonds ( requires energy thus energy from surroundings are absorbed)
How does the energy of core electrons compare with energy of valence electrons?
The energy is higher.
