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Topic: Chem question  (Read 2790 times)

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Offline asdddd

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Chem question
« on: September 18, 2010, 02:09:23 AM »
The diameter of a He atom is how many times
that of a He2+ (an a -particle) ion?
1. 10−4
2. 104
3. 108
4. 10−12
5. 1012
« Last Edit: September 18, 2010, 02:23:32 AM by asdddd »
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Offline Jorriss

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Re: Chem question
« Reply #1 on: September 18, 2010, 02:18:12 AM »
Do you know the radius of Helium? And the radius of the resulting ion (this ion is very special...)?
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Offline asdddd

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Re: Chem question
« Reply #2 on: September 18, 2010, 02:23:41 AM »
Quote from: Jorriss on September 18, 2010, 02:18:12 AM
Do you know the radius of Helium? And the radius of the resulting ion (this ion is very special...)?
no
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Offline asdddd

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Re: Chem question
« Reply #3 on: September 18, 2010, 02:25:03 AM »
Helium is 128 pm right
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Offline Borek

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Re: Chem question
« Reply #4 on: September 18, 2010, 03:43:41 AM »
Quote from: asdddd on September 18, 2010, 02:23:41 AM
Quote from: Jorriss on September 18, 2010, 02:18:12 AM
Do you know the radius of Helium? And the radius of the resulting ion (this ion is very special...)?
no

Have you tried to Google them?
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