Question
Question: Atoms of the transition elements are smaller than those of the s-block elements, because :...
Atoms of the transition elements are smaller than those of the s-block elements, because :
A
There is increase in the nuclear charge along the period.
B
Orbital electrons are added to the penultimate d–subshell rather than to the outer shell of the atom.
C
The shielding effect of d-electrons is small.
D
All of these
Answer
All of these
Explanation
Solution
The atomic radii of the transition metals lie in-between those of s- and p-block elements. In the begining, the atomic radius decreases with the increase in nuclear charge (as atomic number increases), whereas the shielding effect of d-electrons is small and orbital electrons are added to the penultimate d–subshell rather than to the outer shell of the atom.