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
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Which element has:
(a) two shells, both of which are completely filled with electrons?
(b) the electronic configuration 2, 8, 2?
(c) a total of three shells, with four electrons in its valence shell?
(d) a total of two shells, with three electrons in its valence shell?
(e) twice as many electrons in its second shell as its first shell?
(a) Neon (2, 8) has two shells, both of which are completely filled with electrons.
(b) Magnesium has the electronic configuration of 2, 8, 2.
(c) Silicon (2, 8, 4) has a total of three shells, with four electrons in its valence shell.
(d) Boron (2, 3) has a total of two shells, with three electrons in its valence shell.
(e) Carbon (2, 4) has twice as many electrons in its second shell as its first shell.
Updated on: 10-Oct-2022
188 Views
Advertisements