Among LiCl, BeCl2, BCl3 and CCl4, the covalent bond character follows the order
LiCl < BeCl2 > BCl3 > CCl4
LiCl < BeCl2 > BCl3 < CCl4
LiCl < BeCl2 < BCl3 < CCl4
LiCl > BeCl2 > BCl3 > CCl4
Which of the following does not have a tetrahedral structure ?
BH4
BH3
H2O
Which one of the following is the correct order of interactions ?
Covalant < hydrogen bonding < van der Waal's < dipole-dipole
van der Waal's < hydrogen bonding < dipole-dipole < covalent
van der Waals' < dipole-dipole < hydrogen bonding < covalent
Dipole-dipole < van der Waals' < hydrogen bonding < covalent
The correct sequence of increasing covalent character is represented by
LiCl < NaCl < BeCl2
BeCl2 < NaCl < LiCl
NaCl < LiCl < BeCl2
BeCl2 < LiCl < NaCl
Among the following group which represents the collection of isoelectronic species ?
NO, CN-, N2, O2
NO+, , CO
Which one shows maximum hydrogen bonding ?
H2Se
H2S
HF
Which of the following is not a correct statement ?
The electron-deficient molecules can act as Lewis acids.
The canonical structures have no real existence.
Every AB5 molecule does infact have square pyramid structure.
Multiple bonds are always shorter than corresponding single bonds.
The correct order of C-O length among CO, , CO2 is
The type of hybridisation of boron in diboran is
sp-hybridisation
sp2-hybridisation
sp3-hybridisation
sp3d2-hybridisation
Linus Pauling received the Nobel Prize for the work on
atomic structure
photosynthesis
chemical bonds
thermodynamics
