1.

For the energy levels in an atom, which one of the following statements is correct           [AIIMS 1983]

A.                 There are seven principal electron energy levels
B.                 The second principal energy level can have four sub-energy levels and contains a maximum of eight electrons
C.                 The \[M\]energy level can have maximum of 32 electrons
D.                 The \[4s\] sub-energy level is at a higher energy than the \[3d\] sub-energy level
Answer» C.                 The \[M\]energy level can have maximum of 32 electrons


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