MereTeacher

JEE • NEET • FOUNDATION

JEE · NEET Previous Year Question

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

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

A $1.36, 1.40 and 1.71$
B $1.36, 1.71 and 1.40$
C $1.71, 1.40 and 1.36$
D $1.71, 1.36 and 1.40$

Correct answer: C

Solution

(c) These are isoelectronic species. As negative charge increases, ionic radius increases.

More Periodic Table & Periodicity PYQs

$Inert gases have positive electron gain enthalpy. Its correct order is$
$The group having isoelectronic species is:$
$For one of the element various successive ionization enthalpies (in kJ mol^{- 1}) are given below : I.E.\dots$
$In which of the following the elements are in correct order of their chemical reactivity in terms of oxidizing property?$
$For electron gain enthalpies of the elements denoted as ∆_{e g} H, the incorrect option is :$