Question

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:

Solution

Correct option is

Si

 

IE5 >> IE4 i.e. it should be very difficult to remove fifth electron after removing four electrons from the element which will be only in the case of silicon.

                   

                                                               (noble gas configuration)

SIMILAR QUESTIONS

Q1

Which of the following gains electrons more easily?

Q2

IE1 and IE2 of Mg are 178 and 348 kcal mole–1. The energy required for the reaction, 

Q3

Inert pair effect is shown by :

Q4

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

Q5

Which of the following will have maximum electron affinity?

Q6

The electronic configuration 1s2 2s2 2p6 3s2 3p6 3d10, 4s2 4p6 4d10, 5s2is for :

Q7

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

Q8

The first ionization potential (in eV) on N, O atoms are: