The atomic numbers of three elements A, B, and C are given below:Element Atomic number (i) Which element belongs to group 18?
(ii) Which element belongs to group 15?
(iii) Which element belongs to group 13?
(iv) To which period/periods do these elements belong?"
(i) Element C belongs to group 18 as its electronic configuration of element C (10) = 2,8
(ii) Element B belongs to group 15 as its electronic configuration of element B (15) = 2,8,5
(iii) Element A belongs to group 13 as its electronic configuration of element A (5) = 2,3
(iv) The elements A, B, and C all belong to period 2 because all three have the same valence shell filled, i.e, the L shell.
Related Articles
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
