Question

The correct order of ionisation energy of C, N, O, F is

Solution

Correct option is

C < O < N < F

 

Ionisation energy generally increases from left to right in a period but ionisation energy of nitrogen is greater than oxygen due to stable p3configuration.   

Hence, the order is as 

                       C < O < N < F 

SIMILAR QUESTIONS

Q1

The electronic configuration of four elements are given below. Which element does not belong to the same family?

Q2

The least stable ion among the following is

Q3

Ist and IInd IE of Mg are 7.646 and 15.035 eV respectively. The amount of energy needed to convert all the atoms of magnesium into Mg2+ ions present in 12 mg of magnesium vapours is [Given, 1 eV = 96.5 kJ mol–1]

Q4

Which of the following is the most electropositive element?

Q5

Which of the following sequence correctly represents the decreasing acidic nature of oxides?

Q6

Which of the following pairs of species have nearly same size?

Q7

The set representing the correct order of ionic radius is

Q8

The pair of elements having approximately equal ionisation potential is

Q9

Which is not the correct order for the stated property?

Q10

The electron affinity values (in kg mol–1) of three halogens XY and Z are respectively –349, –333 and –325. Then XY and Z respectively, are