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Topic: Group 2 elements  (Read 3749 times)

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Offline opti384

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    • In the Search for the Laws of Nature
Group 2 elements
« on: September 20, 2010, 11:21:00 AM »
Which Group 2 element has chemical properties least like the other members of the group?
(a) Be (b) Ca (c) Sr (d) Ba

The answer is (a) Be. I can't think of any explanation. If it were elements from the group 5 or 6 it would have been easier since I just need to select the semi metals.
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Offline MrTeo

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Re: Group 2 elements
« Reply #1 on: September 20, 2010, 02:43:48 PM »
From what I know this can be easily seen comparing the values of the nuclear effective charge of the different elements: the first and second elements of each group have slightly different properties from the other ones of the same group.

Check here to find some information about Slater's Rules.
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Offline dallasSG

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Re: Group 2 elements
« Reply #2 on: September 28, 2010, 05:44:00 AM »
My guess is that berylium oxide is amphoteric. Which is the distinct difference between oxide of group II metal
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Offline Jzalkm

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Re: Group 2 elements
« Reply #3 on: October 09, 2010, 11:32:25 AM »
any idea why LiNO3 decomposes like a group II nitrate forming oxide, nitrogen dioxide and oxygen instead of nitrite and oxygen only?
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