Question

In case of $Na$ metal if the number of $Na$ atom increases, the difference in energy between successive $MOs$ in $Na(Na{)}_n$ molecules :

• A. increases
• B. decreases
• C. may increase or decrease
• D. no change

Answer 1

The correct option is B decreases

In case of $Na$ metal if the number of $Na$ atom increases, the difference in energy between successive MOs in $Na$ $(Na{)}_n$ molecules decreases. When very large number of $Na$ atoms is present, the discrete energy levels merge to form a continuous band.