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Electron Distribution in Different Orbits

Which of the ...

Question

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

A

2,8,1

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B

8,2,1

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C

2,1,8

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D

2,8,2

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Solution

Answer:

Sodium, Na has atomic number 11. So it has 11 electrons.

The electron configuration is: $1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}$

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Similar questions

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

(a) 2, 8, 1

(b) 8, 2, 1

(c) 2, 1, 8

(d) 2, 8, 2

A

has electronic configuration of

2, 8, 1

and metal B has electronic configuration of

2, 8, 2

. Which metal is more reactive and why?

Q. An atom of an element has electronic configuration of 2, 8, 1. Which of the following statements is correct?

Q. The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.

Q. Question 37

Identify and name the metals out of the following elements whose electronic configurations are given below.

(a) 2, 8, 2
(b) 2, 8, 1
(c) 2, 8, 7
(d) 2, 1

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