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Electronic configuration

At an instant...

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At an instant an atomic orbital has one sign of schi. So while froming molecular orbital only type of orbital should be formed, either bonding or non bonding. What is the cause of forming both of them?

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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. According to MOT (Molecular Orbital Theory), the molecular orbitals are formed by mixing of atomic orbitals through LCAO (linear combination of atomic orbitals). The correct statement(s) about molecular orbitals is/are:
Statement (a): bonding of molecular orbitals are formed by the addition of wave-functions of atomic orbitals of the same phase.
Statement (b): anti-bonding molecular orbitals are formed by subtraction of wave-functions of atomic orbitals of the same phase.
Statement (c): non-bonding molecular orbitals do not take part in bond formation because they belong to inner shells.
Statement (d): anti-bonding molecular orbitals provide stability to molecules while bonding molecular orbitals make the molecules unstable.

Q. According to VBT any covalent bond will be formed by overlapping of valence atomic orbitals of bonded atoms provided atomic orbitals must be half–filled and electrons be in opposite spin.
According to type of overlapping covalent bonds can be classified as: (a)

σ

π

δ

bond.
The combination of orbital that cannot produce non–bonding molecular orbital is:
(internuclear axis is z–axis)

Q. What is the reason for atomic orbitals to form hybrid orbitals in a chemical bond? What causes them to do so?

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