Question

Which of the following have highest electron affinity? 

Solution

Correct option is

Cl

The electron affinities of some of the elements of second period (ie, N, O, F, etc) are however, lower than the corresponding elements (ie, P, S, Cl, etc) of the third period. This is due to the reason that the elements of second period have the smallest atomic size amongst the elements in their respective groups. As a result, there are considerable electron-electron repulsion within the atom itself and hence, the additional electron in not accepted with the same ease as is the case with the remaining elements in the same group.

SIMILAR QUESTIONS

Q1

The trivalent ion having largest size in lanthanide series is

Q2

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

Q3

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

Q4

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

Q5

Which of the following isoelectronic ions has lowest ionisation energy? 

Q6

Which of the following relation is correct?

Q7

If the IP of Na is 5.48 eV, the ionization potential of K will be 

Q8

Of the following elements, which one has the highest electro negativity?

Q9

Which element has the highest electronegativity?

Q10

The values of electronegativity of atom A and B are 1.20 and 4.0 respectively. The percentage of ionic character of A–B bond is