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

A molecule XY2 contains two , two -bonds and one lone pair in valence shell of X. The arrangement of lone pair as well as bond pair is

Q2

Which of the following hybride is ionic?

Q3

Among , unpaired electron is present in 

Q4

The critical temperature of water is higher than that of O2 because the H2O molecule has

Q5

Which of the following molecules is linear?

Q6

A covalent molecule AB4 (not a complex) will have which of the following hybridisation if it is square planar.

Q7

A diatomic molecule has a dipole moment of 1.2D. If the bond distance is 1.0Å, what function of an electronic charge, e, exists on each atom?

Q8

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?

Q9

Which of the following gains electrons more easily?

Q10

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