JEE Main 2015 · 4 Apr · Shift 1 · Chemistry Q41

ChemistrySingle correct+4 / -1Question 41 of 90

The ionic radii (in Å) of $\ce{N^3-}$ , $\ce{O^2-}$ and $\ce{F-}$ are respectively :

1.36, 1.40 and 1.71

1.36, 1.71 and 1.40

1.71, 1.40 and 1.36

1.71, 1.36 and 1.40

Answer and worked solution

Official answer: C

For the isoelectronic ions $\ce{N^3-}$ , $\ce{O^2-}$ , $\ce{F-}$ , the radius shrinks as nuclear charge rises: 1.71, 1.40 and 1.36 Å.

JEE Main 2015 · 4 Apr · Shift 1, Chemistry question 41