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. Which of the above element/s are inert?

Q. Question 1
Which of the following correctly represent the electronic distribution in the Mg atom?

(a) 3, 8, 1
(b) 2, 8, 2
(c) 1, 8, 3
(d) 8, 2, 2

Q. Assertion: Sodium Metal is reactive where as Sodium Ions aren't reactive.

Reason: Sodium Metal has an electronic configuration of 2, 8, 1. Sodium Ions have a configuration of 2, 8.

Q. Assertion [A]: Sodium metal is reactive, whereas sodium ions are not.

Reason [R]: Sodium metal has an electronic configuration of 2, 8, 1 and sodium ions have a configuration of 2, 8.

Q. Metal $A$ has electronic configuration of $2,8,1$ and metal B has electronic configuration of $2,8,2$. Which metal is more reactive and why?