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WorksheetsValence Bond Theory
Total questions: 10
Worksheet time: 3mins
Heitler and London introduced which theory?
Valence Bond Theory
Covalent Theory
Molecular Orbital Theory
VSEPR Theory
s-s overlap is a _______
σBond
πBond
Why xenon, Xe can formed bond with fluorine to form XeF2 and XeF4 compounds?
The electrons in p-orbital promoted to d-orbitals
The Xe atom has lower electronegativity
Empty d orbitals is available
High nuclear charge of Xe atom
Choose the central atom in the molecule below which does not undergo sp3 hybridization.
H2O
ClF3
NH3
CH4
The purpose of promoting one or more electrons in the process of forming hybrid orbitals is ___________________
to increase the number of unpaired electrons
to increase the number of orbital
to make orbital have same the shape and energy
to use the empty d-orbitals
Which is the stronger bond?
σBond
πBond
Choose all the old attractive force(s) (ie. when atoms are isolated)
NA - NB
NA - EA
NB - EB
NB - EA
NA - EB
Two carbon atoms form a linear shaped ethene, C2H4, molecule when bonded with four other hydrogen atoms. Prior to bonding, the carbon atom
undergoes sp hybridisation
does not hybridise
undergoes sp3 hybridisation
undergoes sp2 hybridisation
px - px overlap (perpendicular to internuclear axis) is a _______
σBond
πBond
A π (pi) bond is the result of the
sidewise overlap of two parallel p orbitals
overlap of two s orbitals
sidewise overlap of two s orbitals
overlap of an s orbital and a p orbital
overlap of two p orbitals along their axes
