Question

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

Solution

Correct option is

1s2, 2s2, 2p6, 3s2

1s2, 2s2p6, 3s2 – In III transition e is to be removed from stable configuration.

SIMILAR QUESTIONS

Q1

Which of the following has largest size?

Q2

Which of the following has largest ionic radius?

Q3

Which of the following ion is the smallest ion?

Q4

Which of the following is the smallest in size?

Q5

The smallest among the following ions is

Q6

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

Q7

The trivalent ion having largest size in lanthanide series is

Q8

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

Q9

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

Q10

Which of the following isoelectronic ions has lowest ionisation energy?