Class IX

Electron revolves around nucleus in orbits which have
  1. variable energy
  2. fixed energy
  3. infinite energy
  4. zero energy
D sub-shell can accommodate maximum
  1. 2 electrons
  2. 10 electrons
  3. 14 electrons
  4. 6 electrons
D sub-shell can accommodate maximum
  1. 2 electrons
  2. 10 electrons
  3. 14 electrons
  4. 6 electrons
Lowest energy orbital among following is
  1. 2s
  2. 2p
  3. 3s
  4. 3p
If n = 3 we are in
  1. K shell
  2. L shell
  3. M shell
  4. f shell
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