Ionic Bond formation

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Leslie Contreras 1D
Posts: 35
Joined: Fri Apr 06, 2018 11:02 am

Ionic Bond formation

Postby Leslie Contreras 1D » Sun May 06, 2018 9:31 pm

when you add the electron to Calcium the energy required is 494
where is that number found?
what constitutes as required a cation needing to push an electron or is that released because of the electron leaves?

Susu Le 1F
Posts: 30
Joined: Thu Feb 01, 2018 3:01 am
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Re: Ionic Bond formation

Postby Susu Le 1F » Sun May 06, 2018 9:46 pm

That energy is required to overcome the effective nuclear charge that is acting on the electron.

Leslie Contreras 1D
Posts: 35
Joined: Fri Apr 06, 2018 11:02 am

Re: Ionic Bond formation

Postby Leslie Contreras 1D » Sun May 06, 2018 10:14 pm

Susu Le 1F wrote:That energy is required to overcome the effective nuclear charge that is acting on the electron.


SORRY I still do not understand

SammiOrsini_1B
Posts: 45
Joined: Fri Apr 06, 2018 11:04 am

Re: Ionic Bond formation

Postby SammiOrsini_1B » Sun May 06, 2018 10:21 pm

if the energy required is 494 would we be expected to find this number or is the number given? I have no idea how to find that number

Paywand Baghal
Posts: 32
Joined: Fri Apr 06, 2018 11:01 am

Re: Ionic Bond formation

Postby Paywand Baghal » Tue May 08, 2018 10:39 am

SammiOrsini_1B wrote:if the energy required is 494 would we be expected to find this number or is the number given? I have no idea how to find that number


it should be given, but I believe we just need to know the topic and be able to use any information given, not to memorize.

Chem_Mod
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Re: Ionic Bond formation

Postby Chem_Mod » Tue May 08, 2018 4:02 pm

If you are referring to the ionization energy of Na, this energy must be added to the atom to separate the electron from the rest of the atom:

Na + 494 kJ/mol --> Na+ + e-

The ionization energy is usually measured experimentally.


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