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Orbits

If energy of ...

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If energy of subshell depends only on 'n' instead of 'n+1' each orbital can accomodate maximum upto one electron, then for an element having atomic number is 33, incorret statement is (1) Group number is 5 and period number is 4 (2) Period number is 5 (3) Last shell has only 1 electron (4) Last electron is in the 4th sh

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Q. Which of the following options is/are correct for a shell having principal quantum number n = 5?

Q. PERIODIC CLASSIFICATION OF ELEMENTS-Why are atomic numbers 27-36 in the fourth period of the Modern Periodic Table, even though only elements with the same number of electronic 'shells' are arranged in the same period(atomic numbers 19-26 have 4 shells and the rest in period 4 have 5 shells)?

Q. Give the correct order of initials True (T) or Flase (F) for following statements:
(I) If an electron has zero magnetic quantum number, then it corresponds to every subshell.
(II) A d-orbital can accommodate a maximum 10 electrons only.
(III) In

orbital diagram, Pauli's exclusion principle is violated.
(IV) Minimum number of electrons having

s = - \frac{1}{2}

in phosphorus is 9.

Q. (i) Total number of sub shells in the ‘n’th energy level is

n^{2}

(ii) The maximum number of electrons in a subshell is obtained using the equation (4l + 2)
(iii) The values of orbital angular momentum of an electron in the orbitals 1s, 3s, 3d, 2p respectively is 0, 0

\sqrt{6} h

\sqrt{2} h

(iv) The quantum number not obtained from Schrodinger’s wave equation is ‘

m_{l}

’. The correct option is

Q. Assertion :In hydrogen and hydrogen like species, orbital energy depends only on the quantum number n whereas in multi-electron atom it depends on quantum numbers n and l. Reason: The principal quantum number determines the size and the energy of the orbital.

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