Question

a)write the general electronic configuration of Actinoids b) what is actinoids contraction​

Answer 1

Answer: 1)

The general electronic configuration of actinides is [Rn] 5f1-14 6d0-1 7s2. Here [Rn] is the electronic configuration of the nearest noble gas which is Radium.

2)

Actinide Contraction. The size of atoms or M+3 ions decreases regularly along the actinides series with increase in atomic number from Th to Lr. The steady decrease in ionic radii with an increase in atomic number is referred to as actinide contraction just like lanthanide contraction.