What is the l quantum number for a 4d orbital. A) 0 B) 1 C) 2 D) 3 E) more than

Question

What is the l quantum number for a 4d orbital. A) 0 B) 1 C) 2 D) 3 E) more than one of the above Which orbital is represented in the following picture: A) d_x2-y2 B) d_z2 C) d_xz D) d_xy E) d_yz How many electrons can be contained in all of the orbitals with n = 4? A) 32 B) 10 C) 2 D) 8 E) 18 Which of the following statements is true? A) In the buildup of atoms, electrons occupy the 4f orbitals before the 6s orbitals. B) Only three quantum numbers are needed to uniquely describe an electron. C) An electron in a 2s orbital can have the same n, l, and ml quantum numbers as an electron in a 3s orbital. D) The exact location of an electron can be determined if we know its energy. E) Ni has two unpaired electrons in its 3d orbitals.

Explanation / Answer

10. For a 4d orbital l = 2

11. This orbital is dxy

12. An orbital can have 2n2 electron

   so, n = 4 can have 2 (4)2 = 32 electron

13. Ni = [Ar] 4s2, 3s8

so, Ni has 2 unpaired electrons in 3d

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