The d-and f-Block Elements / d तथा f ब्लॉक के तत्व
JEE Main & Advanced
Chemistry
The d-and f-Block Elements / d तथा f ब्लॉक के तत्व
Question Bank
General Characteristics
question_answer
Which of the following general configuration of outermost shell represents chromium element [Cr?s atomic number = 24] [CBSE PMT 1991; MP PMT 1992, 2001; RPET/PMT 1999]
A)\[{{d}^{5}}{{s}^{1}}\]
B)\[{{d}^{6}}{{s}^{0}}\]
C)\[{{d}^{4}}{{s}^{2}}\]
D)\[{{d}^{3}}{{s}^{2}}\]
Correct Answer:
A
Solution :
This configuration is more stable because of symmetrical distribution of e- and exchange energy.