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Topic: group 5(15)  (Read 1480 times)

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Offline rafarock077

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group 5(15)
« on: December 13, 2018, 05:48:43 PM »
i have an excersive where it says "an element in the group 5(15)" and i'm not sure which group it is referring to. thx
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Offline mjc123

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Re: group 5(15)
« Reply #1 on: December 14, 2018, 04:07:32 AM »
The nitrogen group. We used to call it group V and now we call it group 15, numbering continuously across the d block (rather than saying VA and VB, as formerly).
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