Question 8 This question tests Objectives 1 and 9 of block 1.

Drag and drop the arrows into the boxes to give the correct outer electronic configurations of the elements Ga to Kr. The inner electron configuration is 1s22s22p63s23p63d10.

Put doubly occupied boxes to the left. Use _ to indicate an empty box.

]]> The outer electronic configurations are Ga 4s24p1, Ge 4s24p2, As 4s24p3, Se 4s24p4, Br 4s24p5, Kr 4s24p6.

When placing electrons in the 4p subshell, first occupy each 4p box with electrons with parallel spins and then start pairing electrons from 4p4 onwards. (Hund's rule)

]]> 1 0.3333333 0 Well done

]]> You have some configurations correct

]]> Your response is incorrect

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iVBORw0KGgoAAAANSUhEUgAAABQAAAAfCAYAAADnTu3OAAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEtJREFUSEtj/A8EDFQETFCaamDUQMrBqIGUg1EDKQejBlIOqG4g47eexVSpAjiLY8A041sJN6oYKPR8J5geraQoB6MGUg4Gu4EMDAAEhhArvpgk9wAAAABJRU5ErkJggg== 1 1 80 3 2 1 80 45 3 1 80 87 4 1 80 128 5 1 80 170 6 1 80 212 7 2 160 3 8 2 160 45 9 2 200 45 10 2 160 87 11 2 200 87 12 2 240 87 13 1 160 128 14 2 200 128 15 2 240 128 16 1 160 170 17 1 200 170 18 2 240 170 19 1 200 212 20 1 160 212 21 1 240 212 22 3 200 3 23 3 240 3 24 3 240 45 Remember Hund's rule

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