Question

Explain the trends in atomic radii of d - block elements.

➛12 ​

Answer 1

Answer:

Atomic and Ionic Radii of D Block Elements

Atomic and Ionic Radii of D Block ElementsThe larger decrease in atomic radii, in column 3 to 6 elements is due to the increase in effective nuclear charge but poor shielding because of the smaller number of d-electrons.

Answer 2

Answer: (2) Atomic radii of the elements of the transition series decrease gradually from left to right.

(3)As we move across a transition series from left to right, the nuclear charge increases by one unit at a time.

(3)The last filled electron enters a penultimate (n-1)d subshell. However, d - orbitals in an atom are less penetrating or more diffused and, therefore d electrons offer smaller screening effects.

(4) The result is that effective nuclear charge also increases as the atomic number increases along with a transition series. Hence, the atomic radii gradually decrease across a transition series from left to right.

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