Octet Theory
VSEPR
VBT
Random
100
Element A has 3 electrons in the outermost orbit and element B has 7 electrons in the outermost orbit. The formula of the compound formed between A and B would be
AB3
100
What does VSEPR stand for?
Valence Shell Electron Pair Repulsion Theory
100
A pi-bond is formed by the overlap of
side to side overlapping of p-p orbital
100
Difference between the bond angle of CH4 and NH3 is
2.5 degrees
200
As compared to covalent compounds, electrovalent compounds generally possess higher melting point and higher boiling point. True or false?
True
200
The geometry of electron pairs around S in SF6 is
Octahedral
200
A molecule possessing dipole moment is:
CH4, BF3, H2O, CO2
H2O
200
What is the atomic number of Strontium(Sr)
38
300
The magnitude of the lattice enthalpy of a solid increases with increase in size of ion. True or false?
True
(Smaller the size, greater the charge)
300
The correct order regarding the electronegativity of hybrid orbitals of carbon is
sp<sp2<sp3
300
The number of sigma bonds, pi bonds and lone pair(s) on Xe atom of XeOF4
5, 1, 1
300
What is the capital of New Zealand?
Wellington
400
The formal charge on the oxygen in the middle is?
+1
(FC= V-N-B/2)
400
In which of the following molecules all the bonds lengths are not equal?
NF3, BF3, ClF3, and PF3
ClF3 (sp3d hybridisation)
400
What is the shape of SF4 molecule?
See-saw shape (lp-bp repulsions)
400
What is the name of the following compound
Trinitrotoluene