I know the answers to these questions but I have no idea how to get these answer

Question

I know the answers to these questions but I have no idea how to get these answers. Please provide an explanation for each question

219% A ground-state atom of manganese has- unpaired electrotes and ias electeos and is A) 0, diamagnetic B) 2, diamagnetic C) 3, paramagnetic 11.) The ground-state electron configuration of Cr, Mo, and Ag are exceptions to the Authan for Mo? principle. Which of the following is the slection configutation for 12..The sulfide ion,S2· 12 The sulfide ion, S3, is iscelectronic with which one of the following? issoelectronic with which one of the following? : B) F C) Na D) AP D K

Explanation / Answer

You have to do a new question for answers of question 13, 14 and 15 and 16, 17 and 18.

Question 10. A ground-state atom of manganese has 5 unpaired electrons and is paramagnetic.

As electronic configurations, manganese has 5 electrons in 3d sublevel. So: 1s22s22p63s23p63d54s2, the 3d orbital has 10 places to occupy the electrons and only has 5 slots occupied. Is paramagnetic because have five orbitals in sublevel d.

Question 11. The ground-state electron configuration of Cr, Mo, and Ag are exceptions to the Aufban principle. Whick of the following is the electron configuration for Mo?

(A) (Kr)5s14d5

Question 12. The sulfide ion S2-, is isoelectronic with which one of the following?

A) O2- the oxygen ion

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