Explain S,P,D,F blocks of the modern …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

Explain S,P,D,F blocks of the modern periodic table

Posted by Sangeeth M?? 7 years, 6 months ago

CBSE > Class 11 > Chemistry

5 answers

Shreya Singh 7 years, 6 months ago

f-block elements Elements in which the differentiating electron enters into (n-2)f orbital of antipenultimate or ultimate shell are called as f-block elements. f-block contains two series 4f series called as lanthanides and 5f series called as actinides. f-block elements r also known as inner transition elements. General electronic configuration of f-block elements is- (n-2)f^1-14(n-d)^0-1ns^2 np^6

4Thank You

Shreya Singh 7 years, 6 months ago

ns^1-2*(for g.e.c.of d-block elements)

3Thank You

Shreya Singh 7 years, 6 months ago

General electronic configuration of d-block elements - (n-1)d^1-10 ns^2 np^6

4Thank You

Shreya Singh 7 years, 6 months ago

d-block elements Elements in which the differentiating electron enters into (n-1)d orbital of penultimate shell are called d-block elements. d-block contains 10 groups (3-12 groups). d-block elements are also known as transition elements except 12 group.

3Thank You

Shreya Singh 7 years, 6 months ago

First just remember the point that the letter denoting blocks i.e.s,p,d,f are always written in small letters. s-block Elements in which the differentiating electon enters into s-orbital of valence shell are called as s-block elements. s-block max. accomodates 2 electrons so,it has 2 groups,first group and second group. General electronic configuration of s-block elements is - ns^1-2. p-block Elements in which the differentiating electon enters into p-orbital of valence shell are called as p-block elements. p-block max. accomodates 6 electons so,it has 6 groups (13-18 groups). General electronic configuration of p-block elements is - ns^2np6.

5Thank You

ANSWER