Question

The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is

Solution

Correct option is

C < N > O

 

Nitrogen has more ionisation potential than carbon and oxygen because its outermost orbit is half-filled. So the order is

C < N > O.

SIMILAR QUESTIONS

Q1

Which of the following has largest ionic radius?

Q2

Which of the following ion is the smallest ion?

Q3

Which of the following is the smallest in size?

Q4

The smallest among the following ions is

Q5

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

Q6

The trivalent ion having largest size in lanthanide series is

Q7

Which of the following elements will have the lowest first ionisation energy?

Q8

A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration 

Q9

Which of the following isoelectronic ions has lowest ionisation energy? 

Q10

Which of the following relation is correct?