19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The condition to form a molecular orbital from atomic orbital is
The number of molecular orbitals formed is equal to the number of combining atomic orbitals. When two atomic orbitals combine, two molecular orbitals are formed one is known as bonding molecular orbital while the othe…
The molecular orbitals like atomic orbitals are filled in accordance with the
Which of the following have identical bond order? (I) CN– (II) O2 (III) NO+ (IV) N2
Which one of the following species is diamagnetic in nature ? (a) H (b) H (c) H (d) He
Take NA as the number of Anti-bonding molecular orbitals and NB as the number of Bonding molecular orbitals. The molecule is stable when NA ____________ NB. a) is greater than b) is equal to c) is less than d) is grea…
Which of the following is paramagnetic? (a) O
The ground state electronic configuration of valence shell electrons in nitrogen molecule (N2) is written * , , 2 , 2p 2p x y z s s p .Hence,the bond order in nitrogen molecule is :
The ion that is isoelectronic with CO is:
The number of anti-bonding electron pairs in O molecular ion on the basis of molecular orbital theory is (atomic no. of O is 8):
Which one of the following is not paramagnetic?
Using MO theory, predict which of the following species has the shortest bond length? (a) O (b) O (c) O (d) O Ans. (d) Sol. As we know, Bond length 1/bond order. In option A, Ohas bond order 2.5 In option B, Ohas bo…
Accordingly MO theory (a) O is paramagnetic and bond order is greater than O2. (b) Ois paramagnetic and bond order is less than O2. (c) Ois diamagnetic and bond order is less than O2. (d) Ois diamagnetic and bond orde…
Which of the following molecules have same bond order? H2, He2, C2 and O2
Metallic bond is.
The boiling point of a substance increases with increase in
Which of the following molecules do show the hydrogen bonding? I. CCl3CH(OH)2 II. o-hydroxy benzoic acid
Which of the following molecule can form a hydrogen bond?
What type of intermolecular forces are due to the attraction between temporary dipoles and their induced temporary dipoles?
Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?
The correct order of the strength of H-bonds is:
o-nitrophenol can be easily steam distilled whereas p-nitrophenol cannot be. This is because of :
Which of the following hydrogen bonds is the strongest?
What happens to the London forces, if the number of electrons increases?
An ether is more volatile than alcohol having the same molecular formula. This is due to