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Atoms and Atomic Structure

Why is it difficult to remove an electron from halogens?


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Answered 2012-04-22 17:45:51

In their outer electron shell, halogens have 7 valence electrons, one less than the number needed for a full shell. Therefore, it is much, much easier for the halogen to gain an electron in bonding than for it to lose 7 - the ionization energy (energy required to remove an electron from an atom) is quite high.

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How difficult it is to remove an electron.


Halogens are not like metals. Halogens are elements missing one electron for full valency.


The outer electron shells of the halogens contain seven electrons, and need one more electron to have eight and become stable.


Halogens are reactive because they have high tendency to gain an electron which is called electron affinity to complete its octet and become stable...


Group 1 Alkali metals because the halogens need one electron to fill their outer electron shell.


Ionic bond is formedby transfer of electron between alkali metal and halogens.


Halogens have 7 electrons in their outermost electron shell. They gain an electron to get the noble gas configuration. So they make ions with -1 charge.



Group 1 metals react with halogens through electron configuration. Group 1 (Alkali) metals have one electron in their outer shell.


Halogens typically gain an electron to achieve an octet and become , F- Cl-,, Br-, I-



the halogens are electron withdrawing groups. e.g. F, Cl, etc


Halogens tend to gain one electron when forming bonds and the Alkali metals tend to lose an electron, therefore, sodium chloride forms the ionic compound of NaCl.


They have to gain 1 electron. Halogens have 7 electrons in their valence shell and noble gasses have 8.


An ionic bond is formed by electron transfer between alkali metals and halogens.



Halogens and Alkali metals are the most reactive becasue of electrons. Alkali metals loose an electron and it becomes violent, halogens gain and electron violently. This is becasue all elements want to have a full valence shell of electrons. When alkali metals loose an electron they become positive Cations.


The valency of halogens is 1. his refers to the ability of an element to takeup or give out an electron to form a complete shell of energy.


no halogens are not metals as they are on the left side of the periodic table which appears to be the side of non metals they have tendency to gain electron


Halogens have 5 electrons in their outermost p shell in their electrically balanced state. The p shell has 3 orbitals in each energy level. Halogens have 2 filled orbitals each with 2 electrons in them and one orbital with only one electron in it. In order to obtain the stable noble gas electron configuration, halogens gain one electron to completely fill the p shell on the outermost energy level. This gives halogens a charge of -1.


Electron affinity is the amount of energy released when a neutral atom accepts an electron. Halogens have the highest electron affinity with chlorine having max. electron affinity.


having 1 electron in theis valance shell they can readly donate electron.


It is difficult to remove electron from He than Li. LI easily loses electron and reach stable state.


gaining an electron to form a negative ion




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