Why d-block elements are called outer while f-block elements are called inner

Why d-block elements are called outer while f-block
elements are called inner transition elements?????????

Question Posted / msaqibtheumerkhel

3 Answers
15895 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why d-block elements are called outer while f-block elements are called inner transition elements?..

Answer / muhammad ehsan ullah

F subshell has less shielding effect, so, it is more strongly attracted by nucleas, and it penetrates behind s subshell of (n-2) orbital. Due to the presence of f subshell at penultimate position, f block elements are called inner transition elements.
While,
d subshell is present at valance/ outermost position in d block elements, so, they are also called outer transition elements.

Is This Answer Correct ?

0 Yes

1 No

Why d-block elements are called outer while f-block elements are called inner transition elements?..

Answer / mah noor

due to less screening effect

Is This Answer Correct ?

1 Yes

6 No

Why d-block elements are called outer while f-block elements are called inner transition elements?..

Answer / monojit mitra

Due to the less screening effect of the f-orbitals they are
attracted mostly by the nucleus rather than the d-orbitals.
As a result of this the f-block elements are called inner
transition elements while d-block elements are called outer
transition elements.

Is This Answer Correct ?

20 Yes

40 No

Post New Answer

More Inorganic Chemistry Interview Questions

How can we judge if three acid's put together like Sulphuric,Nitric and Hydrochloric acid?

3 Answers

What is divalent ion?

3 Answers

what is the net ionic equation of MgSO4 and AgNO3?

2 Answers

what are the transition elements and the inner elements?