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Which one of the following is a correct ...

Which one of the following is a correct electronic configuration of sodium?

A

2, 8, 1

B

8, 2, 1

C

2, 1, 8

D

2, 8, 2

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The correct Answer is:
A
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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
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  5. The subatomic particle called electron was discovered by :

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  6. Which of the following represents the correct electron distribution in...

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  7. The correct electronic configuration of a chloride ion is :

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  8. Goldstein's experiments which involved passing high voltage electricit...

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  9. The number of electrons in the atom of an element X is 15 and the numb...

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  10. The ion of an element has 3 positive charges. The mass number of atom ...

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  11. The first model of an atom was given by

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  12. Which of the following statement is always correct?

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  14. The atom of an element X has 7 electrons in its M shell (a) Write th...

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  16. An atom of an element X may be written as .(4)^(9)X What does the fi...

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  17. The electronic configuration of an element Z is 2, 8, 8. (a) What is...

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  18. The total number of electrons in a nitrogen atom is 7. Find the number...

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