Question

The electronic configuration of the element with maximum electron affinity is

Solution

Correct option is

1s2, 2s2, 2p6, 3s2, 3p5

 

Generally electron affinity increases in a period and decreases in a group but due to smaller size and high electron density on fluorine atom, it experience high inter electronic repulsions. Thus, F ion is less stable in comparison to Cl ion. Hence, electron affinity is highest for chlorine.  

Its electronic configuration is

                    Cl(17) = 1s2, 2s2, 2p6, 3s2, 3p5

SIMILAR QUESTIONS

Q1

Which of the following is the most electropositive element?

Q2

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

Q3

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

Q4

The set representing the correct order of ionic radius is

Q5

The pair of elements having approximately equal ionisation potential is

Q6

Which is not the correct order for the stated property?

Q7

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

Q8

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

Q9

Which of the following has the highest second ionisation energy?

Q10

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