Question

Which set is expected to show the smallest difference in first ionisationenergy?

Solution

Correct option is

Fe, Co, Ni

Fe, Co, Ni are transition metal atoms and variation in properties of such elements (d-block elements) is quite less (as d electrons are effectively shielded by the inner electrons).

SIMILAR QUESTIONS

Q1

The dipole moment of LiH is  and the interatomic distance between Li and H in this molecule is 1.596Å. What is the per cent ionic character in LiH?

Q2

Which of the following gains electrons more easily?

Q3

The IE1, IE2, IE3, IE4 and IE5 of an element are 7.1, 14.3, 34.5, 46.8, 162.2 eV respectively. The element is likely to be  

Q4

The elector-negativities of N, C, Si and P are such that

Q5

Which of the following will have maximum electron affinity?

Q6

EN of the element (A) is E1 and IP is E2. Hence EA will be

Q7

Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?

Q8

H2O is dipole, whereas BeF2 is not. It is because

Q9

The molecule having highest bond energy is

Q10

The interatomic distance in H2 and Cl2 molecules are 74 and 198 pm respectively. The bond length of HCl is