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Covalent Bond vs Ionic Bond

47. Why bondi...

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47. Why bonding molecular orbital are lower energy than atomic orbital and antiboding molecular orbital more than atomic orbital

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Q. According to MOT, two atomic orbitals overlap resulting in the formation of molecular orbitals. Number of atomic orbitals overlapping together is equal to the molecular orbital formed. The two atomic orbital thus formed by LCAO (linear combination of atomic orbital) in the same phase or in the different phase are known as bonding and antibonding molecular orbitals respectively. The energy of bonding molecular orbital is lower than that of the pure atomic orbital by an amount

Δ

. This known as the stabilization energy. The energy of antibonding molecular orbital is increased by

Δ^{'}

(destabilization energy).
Which of the following statement(s) is(are) true:

Q. According to MOT, two atomic orbitals overlap resulting in the formation of molecular orbitals. Number of atomic orbitals overlapping together is equal to the molecular orbital formed. The two atomic orbital thus formed by LCAO (linear combination of atomic orbital) in the same phase or in the different phase are known as bonding and antibonding molecular orbitals respectively. The energy of bonding molecular orbital is lower than that of the pure atomic orbital by an amount

Δ

. This known as the stabilization energy. The energy of antibonding molecular orbital is increased by

Δ^{'}

(destabilization energy).
How many nodal plane(s) is/are present

σ_{(s and p)}

in bonding molecular orbital?

Q. If the total energy of the two atomic orbitals is

x

and the energy difference between bonding and antibonding molecular orbitals is

y

then the energy of bonding and anti-bonding molecular orbital will be:

Q. Which of the following molecular orbital is symmetric with energy lower than combining atomic orbitals?

Q. When two atomic orbitals combine, energy of bonding molecular orbital is lowered by

x

while that anti bonding molecular orbital is raised by

y

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