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How many electrons are present in the M-...

How many electrons are present in the M-shell of an element with atomic number 20?
A) 8
B) 6
C) 18
D) 2

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BODY BOOKS PUBLICATION-PEPIODIC TABLE AND ELECTRONIC CONFIGURATION-EXAMPLE
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  2. What is the maximum number of electrons that can be accommodated in th...

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  3. How many electrons are present in the M-shell of an element with atomi...

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  4. How many electrons are present in helium ("2He)?

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  5. Complete the subshell electronic configuration of He?

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  6. Write the electronic configuration of Lithium ("3Li)

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  7. Complete the electronic configuration of beryllium?

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  8. Write the electronic configuration of Borom.

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  9. Write the electronic configuration of Carbon.

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  10. Write the electronic configuration of sodium and argon and complete th...

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  11. How was the shell wise electronic configu-ration of potassium written?

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  12. Compare the energies of 1 s and 2 s subshells. Which one has lower ene...

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  13. Among the 3s & 3p subshells which has higher energy?

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  14. Among the 3d & 4s sushells which has higher energy?

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  15. Write down the subshells in the increasing order of their energies.

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  16. Write the subshell wise electronic configu-ration of potassium

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  17. The electronic configuration of scandium ("21Sc) is

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  18. Write the electronic configuration of "22TI, "23V, the two elements af...

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  19. Which is the nobel gas preceding sodium ("11Na)/

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  20. Write its subshell electronic configuration. (nobel gas preceding sodi...

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