Formation of a Cation from an Atom

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Jason Muljadi 2C
Posts: 62
Joined: Thu Jul 27, 2017 3:01 am

Formation of a Cation from an Atom

Postby Jason Muljadi 2C » Wed Jan 24, 2018 10:39 pm

Can someone explain to me if the formation a cation from an atom in the gas phase is an endothermic or exothermic reaction? I saw this on the Internet while studying for my test and now I am thoroughly confused.

Liz White 1K
Posts: 35
Joined: Thu Jul 13, 2017 3:00 am

Re: Formation of a Cation from an Atom

Postby Liz White 1K » Wed Jan 24, 2018 10:58 pm

At first glance, I would say that it is an exothermic reaction because you are removing electrons from the atom, therefore releasing energy.

Jennifer Ho 1K
Posts: 31
Joined: Thu Jul 13, 2017 3:00 am

Re: Formation of a Cation from an Atom

Postby Jennifer Ho 1K » Thu Jan 25, 2018 1:44 am

The formation of a cation from an atom is endothermic because to form the cation, an electron must be removed from the atom. To do this, one of the valence electrons must be excited to the point where it can break free from the pull of nucleus, requiring an input of energy to reach this excited state, indicating it's endothermic.

Katie Lam 1B
Posts: 52
Joined: Fri Sep 29, 2017 7:06 am

Re: Formation of a Cation from an Atom

Postby Katie Lam 1B » Thu Jan 25, 2018 2:51 pm

It is endothermic because it takes energy to break bonds and remove electrons from the atom. Forming cations is always endothermic.


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