Chemical Bondin...

Direction (Q. Nos. 1-14) This section contains 14 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. Assuming that Hund’s rule is violated, the bond order and magnetic nature of the diatomic molecule B₂ is

[IIT JEE 2010]

In which of the following pairs of molecules/ions both the species are not likely to exist?

Among the following the maximum covalent character is shown by the compound 

Assuming (2s-2p) mixing is not operative, the paramagnetic species among the following is

[JEE Advanced 2014]

Select the correct statem ent about   and and O₂.

The common features among the species CN^-, CO, NO⁺ and N₂ are

According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order?

O — F and F₂ can be compared in terms of

Which of the following diatomic molecules would be stabilised by the removed of an electron?

Probability (electron charge density) of bonding and anti-bonding molecular orbitals are given.

Select the correct probability,

If one of the electrons in the He₂ molecule is taken to the next excited state, then bond order in He₂

If one of the electrons (1s²) of helium is taken in excited state then bond order of He₂ is

The bond energy of H₂ is 436 kJ mol ^-1. Thus, bond energy of   is

Consider the following oxidation/reduction process,

Q. Magnetic moment does not change in 

Direction (Q. Nos. 15) This sectionis based on statement I and Statement II. Select the correct answer from the code given below.

Q. 

Statement I : N₂ has a greater dissociation energy than  , where as O₂ has lower dissociation energy than .

Statement II : N₂ has 14 electrons while O₂ has 16 electrons .