Classification Of Elements And Periodicity In Properties Question 84
Which one of the following is expected to have the largest size
Options:
A) $ {{F}^{-}} $
B) $ {{O}^{2-}} $
C) $ A{{I}^{+3}} $
D) $ {{N}^{-3}} $
Show Answer
Answer:
Correct Answer: D
Solution:
Due to having three electrons atomic size increases. $ {{F}^{-}}=9+1=10 $ electrons; $ {{O}^{-2}}=8+2=10 $ electrons $ A{{I}^{+3}}=13-3=10 $ electrons; $ {{N}^{3-}}=7+3=10{{e}^{-}} $ Because electrostatic force between nucleus and $ {{e}^{-}} $ cloud is least in nitrogen.
BETA
