Question

Which of the following is the smallest in size?

Solution

Correct option is

Na+

 

Na+ < F < O2– < N3–       

All are isoelectronic. Effective nuclear charge is highest for Na+, so it has the smallest size. 

SIMILAR QUESTIONS

Q1

Which group of the Periodic Table does not contain only metals?

Q2

The elements having the electronic configuration

[kr] 4d10f14, 5s2p6d2, 6s2 belongs to which block

Q3

Which pair of atomic numbers represents s-block elements?

Q4

Mendeleef’s Periodic Table is upset by the fact that

Q5

If Aufbau rule is not followed, K-19 will be placed in

Q6

Which of the following has largest size?

Q7

Which of the following has largest ionic radius?

Q8

Which of the following ion is the smallest ion?

Q9

The smallest among the following ions is

Q10

In the isoelectronic species the ionic radii (Å) of N3–, O2– and F are respectively given by