LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
2.0k views
in Olympiad by (65.3k points)

Some metals impart very bright colours such as red, pink, yellow to the flame when heated. The cause of this phenomenon is the excitation of electrons in the outermost electronic shell.

The electronic configuration in the outermost shell of these metals is represented as

(A) (n - 1) s2p6,ns2p1 

(B) (n - 1) s2p6d10,ns1 

(C) (n - 1) s2p6,ns1 

(D) ns2p6d1

1 Answer

+1 vote
by (71.9k points)
selected by
 
Best answer

Correct option: (C) (n - 1) s2p6,ns1 

Explanation: 

It is an alkali metal of group-1 of the periodic table.

∴ Configuration is (n -1)s2p6, ns1

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...