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Trends in Modern Periodic Table

Which one of ...

Question

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

(a) 2, 8

(b) 8, 2, 1

(c) 2, 1, 8

(d) 2, 8, 1

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Solution

(d) The correct electronic configuration of sodium is 2, 8, 1.

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Q. Question 18
Which one of the following is the correct electronic configuration of sodium?

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

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

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

(a) 2, 8

(b) 2, 8, 4

(c) 2, 8, 8

(d) 2, 8, 7

A

has electronic configuration 2,8,1 and

B

has 2,8,7. Which one will have higher electron affinity?

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?

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