3 Nov 2021
Problem 31
Page 336
Section: Problems by Topic
Chapter 8: Periodic Properties of the Elements
Textbook ExpertVerified Tutor
3 Nov 2021
Given information
ions are given. These must be arranged according to decreasing order of radius.
Step-by-step explanation
Step 1.
The ionic radii of isoelectronic species increases with a decrease in the magnitude of nuclear charge. Higher the nuclear charge, stronger is the attraction between nucleus and outermost electron. This results in the decrease of atomic radius.
All the given species have electrons. Number of protons are respectively in magnesium cation , sodium cation , fluoride anion and oxide anion .
So, the nuclear charge is maximum in magnesium ion and it is minimum in oxide ion .
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