1.

When a large number of atoms are brought together to form a crystal

A. the energy levels of inner shell electrons are affected appreciably by the presence of other neighbouring atoms.
B. The energy levels of outer shell electrons are affected appreciably by the presence of other neighbouring atoms.
C. the energy levels of both inner and outer shell electrons are affected appreciably by the presence of other neighbouring atoms.
D. none of the above.
Answer» C. the energy levels of both inner and outer shell electrons are affected appreciably by the presence of other neighbouring atoms.


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