Question

Among , unpaired electron is present in 

Solution

Correct option is

KO2 only

In  has one unpaired electron. As for O2, there ae two such unpaired electrons. In other cases of electrons are paired.

SIMILAR QUESTIONS

Q1

The number and type bonds between two carbon atoms in CaC2 are

Q2

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

Q3

Which of the following molecules is linear?

Q4

Which of the following hybride is ionic?

Q5

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

Q6

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

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 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