Quiz4:chapter one Transition elements

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#1. which of the following elements its d-sublevel is half filled in atomic state?

#2. In atomic state the paring of electrons in 3d orbitals starts after ....... element

#3. x and y are two transition elements from the 1st. series in which d-sublevel have the same number of electrons so x and y may be:

#4. The number of elements of the 1st. series that all its orbitals completely filled except one orbitals equal ...... elements

#5. which of choice represents the element in transition series that is located after 38Sr

#6. In the main transition elements the vertical group that not take B letter contains ...... elements

#7. In nickel atom 3d-sublevel contains ........ unpaired electrons

#8. In the first column in d-block the elements are ended with configuration ....... and the last column elements are ended with configuration .....

#9. The second transition series contains ........ elements

#10. The fourth transition series includes the elements in which the ......... sublevel is filled successively

#11. In d-block the number of groups is less than number of vertical columns by .......

#12. d-block contains ........ vertical columns and ........... groups .

#13. In the periodic table the main transition elements start with group ..........

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