Why does akaline earth metals react with oxygen
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Why does akaline earth metals react with oxygen

[From: ] [author: ] [Date: 12-10-02] [Hit: ]
-Oxygen is highly reactive.(grade 9), then it is simply because oxygen requires two electrons and alkaline earth metals dispose of two.-The electronic configuration of Group 2 is [ ] ns^2.It does in fact cost quite a lot of energy to form M^2+ (and O^2-) but the lattice energy of M^2+O^2- is HUGEbecause it depends on Z+×Z- (= 4) and more than compensates for the energy need to form the constituent ions.For NaClZ+×Z- = 1.......
I haft to know this answer for tomorrow because i have a science test and that's gonna be one of the questions except the test question will look like this "Which family of elements will oxygen react with? Why?" But i already know part of the answer which is akaline earth metals, but i don't know why. Do you guys know?

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Oxygen is highly reactive. If you are in first year science
(grade 9), then it is simply because oxygen requires two electrons and alkaline earth metals dispose of two.

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The electronic configuration of Group 2 is [ ] ns^2. It does in fact cost quite a lot of energy to form M^2+ (and O^2-) but the lattice energy of M^2+O^2- is HUGE because it depends on Z+×Z- (= 4) and more than compensates for the energy need to form the constituent ions. For NaCl Z+×Z- = 1. So something like MgO will have ~4X the lattice energy of NaCl.
UMgO = 3791, UNaCl = 790 kJ mol^-1
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keywords: Why,with,earth,react,akaline,metals,does,oxygen,Why does akaline earth metals react with oxygen
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