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Any Chem AS question to be posted here :):)

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Haaks18:
Thaaanks you but isnt it Na and then Mg and then Cl- and then Cl and then Na+ and at last Mg+2?!

Deadly_king:

--- Quote from: Haaks18 on December 13, 2010, 10:03:11 am ---Thaaanks you but isnt it Na and then Mg and then Cl- and then Cl and then Na+ and at last Mg+2?!

--- End quote ---

The answer is as follows:

Na, Cl-, Mg, Cl, Na+, Mg2+

NOTE :
1. Leaving the noble gases out, atoms get smaller as you go across a period.

2. The ionic radii fall as you go across the period though we need to look at the positive and negative ions separately.

3. You're provided the exact length for the radii of these elements in the data booklet.

Click here for more notes about it.

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