Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
3.7k views
in Chemistry by (45.9k points)
closed by

Which pair of elements has similar properties?\(\Bigg[\begin{matrix} 13 & 31 \\ 11 & 21 \end{matrix}\Bigg]\)

1 Answer

+1 vote
by (44.0k points)
selected by
 
Best answer
Atomic No. Electronic Configuration
\(\Bigg\{\begin{matrix} 13 \\ 31 \end{matrix}\) 2,8,3
2,8,18,3
\(\Bigg\{\begin{matrix} 11 \\ 21 \end{matrix}\) 2, 8,1
2,8,9,2

Since the elements having atomic number 13 and 31 have 3 outermost electrons. So, these elements are placed in 3rd group due to which these elements have similar properties.

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

...