Q23 of 55 Page 18

Show the distribution of electrons in oxygen atom (atomic number 8) using the orbital diagram.

An oxygen atom has only 8 numbers of electrons, hence its electronic configuration is :

[He] 2s² 2p⁴ ( [He] = 1s²)

The orbital diagram of oxygen will be -

Which of the following statements concerning the quantum numbers are correct?

Arrange s, p and d sub-shells of a shell in the increasing order of effective nuclear charge (Z_eff) experienced by the electron present in them.

Nickel atom can lose two electrons to form Ni²⁺ ion. The atomic number of nickel is 28. From which orbital will nickel lose two electrons.

Which of the following orbitals are degenerate?

3d_xy, 4d_xy, 3d_z² , 3d_yx, 4d_yx, 4d_zz