Question

(a) What element has this electronic configuration? 1s2 2s2 2p6 3s2 3p1 (b) What element has this electronic configuration? 3d 4s 4p 3. (a) Which of the following atoms or ions is diamagnetic? N3+ Mn4+ Cu N- Ti (b) Which of the following atoms or ions is paramagnetic? F- Ga+ Se4+ P3- Se2+ 4. Which one of the following elements has a +3 ion with 3 unpaired electrons? As Cr Fe Co Ti 5. Use periodic trends and predict which of the following elements has the largest first ionization energy.

          (a) What element has this electronic configuration?
1s2 2s2 2p6 3s2 3p1 
(b) What element has this electronic configuration?
3d 4s 4p

3. (a) Which of the following atoms or ions is diamagnetic? N3+
Mn4+ Cu N- Ti 
(b) Which of the following atoms or ions is paramagnetic? F- Ga+ Se4+ P3- Se2+

4. Which one of the following elements has a +3 ion with 3 unpaired electrons? As Cr Fe Co Ti

5. Use periodic trends and predict which of the following elements has the largest first ionization energy.

Added by Tony T.

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