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Considering only the molecular orbitals formed by combinations of the s atomic orbitals in the valence...

Considering only the molecular orbitals formed by combinations of the s atomic orbitals in the valence shell, how many molecular orbitals can be formed by 4000 sodium atoms? In the lowest energy state, how many of these orbitals will be populated by pairs of electrons?

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Answer #1

Sodium can corm the molecular orbitals

by combining the two 3S orbitals from the two sodium metals

suppose two sodium metals come close together and can form the two molecular orbital

one is bonding molecular orbital and anothe is antibonding molecular orbital

lowest energy molecular orbital will be occupied by two electrons.

in this way 4000 sodium atoms can form 4000 molecular orbitals out of that 2000 will be bonding molecular orbitals and 2000 will be antibonding molecular orbital

2000 bonding molecular orbitals will be occupied by 2000 pair of electrons

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