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magnesium has a 2 valence electrons. because the third electron is not a valence electron, or in the outer shell, much more energy would be needed to remove it

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โˆ™ 2009-10-14 08:28:42
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Q: Why is much more energy needed to remove the third electron than the second in magnesium atom?
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Related questions

What energy is required to remove an electron from an atom?

The energy needed to remove an electron from an atom (in the gaseous state) is called the IONIZATION ENERGY.


What is the energy required to remove an electron from an atom?

The energy needed to remove an electron from an atom (in the gaseous state) is called the IONIZATION ENERGY.


What is ionization energy needed for?

IE is the energy needed to remove one electron from an atom.


What energy is needed to remove an electron from its outer most shell?

The ionization energy


Contrast ionization energy and electron affinity?

Ionization energy is the energy needed to remove an electron from an element, whereas electron affinity is the amount of attraction a substance has for a electron. One is the amount of energy to remove an electron while the other is the likeliness for it to attract an electron.


Energy needed to remove an electron from an atom?

The energy required to remove an electron from an atom is known as ionization energy. The ionization energy increases as the number of orbits around the nucleus increases.


Why does magnesium have a higher third ionisation energy than aluminium?

Magnesium has higher 3rd ionisation energy. It is difficult to remove 3rd electron from completely filled orbit.


The amount of energy that is needed to remove the most loosley held electron is referred to as the what?

Ionization Energy


What best defines the ionization energy of an element?

The amount of energy needed to remove the outermost electron.


What is the energy needed to remove an electron from a negative ion to form a neutral atom or molecule?

Ionization energy


What are the first second and third ionization energies?

the 1st ionization energy is the energy needed to remove an electron from a neutral atom. the 2nd IE is the energy needed to remove an electron from a +ve ion that carry one +ve charge. the 3rd IE is the energy needed to remove an electron from a +ve ion that carry two +ve charges. note : the nth ionization energy is less than the nth+1 ionization energy.


Why more energy is required to remove the second electron compared to removing the first electron?

electrons in energy levels that are further from the nucleus have the most energy.(the electron shells closest to the nucleus have the lowest energy) this means because the second energy level is further from the nucleus than the first electron, more energy is going to be needed to remove the second electron.

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