The orbitals undergoing Hybridisation involve
Orbitals of same atom with almost similar energies
Orbitals of different atoms but with equal energies
Orbitals of different atoms with different energies
Orbitals of same atoms with exactly equal energies
The orbitals of same atom having similar energies undergo hybridisation to form hybrid orbitals which have same energy.
Hence, the correct answer is (1)
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