In the sixth period , the orbitals that are filled are :

In the sixth period, the orbitals being filled are

In the sixth period, the orbitals being filled with electrons are

In the 5^th period the orbitals being filled are

a. In the sixth period, after filling of 6p orbitals, the next electron (i.e. 57th ) enters the 5d -orbital against aufbau principal and there after the filling of seven 4f -orbitals starts with cerium (Z = 71) . Explain this anomalous behaviour.

On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.

On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.

On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.

On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.