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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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โˆ™ 2012-04-22 17:45:51
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Q: Why is it difficult to remove an electron from halogens?
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Related questions

For Group 2A metals which electron is the most difficult to remove?

The third electron.


What does the ionization energy tell you about an element?

How difficult it is to remove an electron.


How are halogens like metals?

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


What is characteristic about the outer electron shells of the halogens?

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


What does not have identical outer electron configuration?

halogens


Do halogens have high electron affinities?

Yes


Why halogens are reactive?

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


What group NORMALLY bonds with halogens?

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


How many electrons do halogens gain?

1 electron


Which elements have electron configurations that end in ns2np5?

halogens


What element achieves the electron configurations of noble gases by gaining one electron?

halogens


Would it be most difficult to remove an electron from sodium aluminum sulfur or chlorine?

Sulfur


What kind of chemical bond is formed by transfer of electron between alkali metal and halogens?

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


What ion charge do halogens have?

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.


Which element group have the most negative electron affinities?

halogens


Which elements have electron configuration that end in ns2 np5?

halogens


What elements has the largest electron affinity?

These elements are halogens.


Do halogens gain or lose an electron when forming compounds?

gain


How do halogens form ionic bonds?

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


What has electron configurations of noble gases by gaining one electron?

All halogens or group 17 elements.


The most reactive non metals achieve stable electron configuration by gaining one electron?

halogens


List of electron withdrawing group?

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


How do group 1 metals react with halogens?

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


If Halogens form compounds by gaining an electron what are they becoming?

Negative ion


Do halogens gain or lose an electron when forming compound s?

gain