The Increasing Order Of The First Ionisation Enthalpies Of Elements B, P, S And F (lowest First) Is

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Question

The increasing order of the first ionisation enthalpies of elements B, P, S and F (lowest first) is

Solution

Correct option is

B < S < P < F

 

Examine the position in Periodic Table.  

                            B C N O F  

                                 P  S

Phosphorus is having stable half-filled configuration.

Hence, order is, 

                             B < S < P < F.

Testing

SIMILAR QUESTIONS

Q1

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

Q2

Which of the following has the highest second ionisation energy?

Q3

The electronic configuration of the element with maximum electron affinity is

Q4

The first ionisation energy of oxygen is less than that of nitrogen. Which of the following is the correct reason for this observation?

Q5

The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species, K+, Ca2+, Mg2+, Be2+

Q6

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

Q7

Which is likely to show inert pair effect?

Q8

The correct order of the size of iodine species is

Q9

In which one of the following pairs the radius of the second species is greater than that of the first?

Q10

The element having highest electron affinity is