![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
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
Pressure and temperature determine the state of a substance. Explain this in detail.
(a) Atoms of some elements are not able to exist independently. For such elements, atoms form molecules and ions. In case of metals and inert gases, atoms can exist independently.
Atoms of metal and inert gases: E.g., Metals (Na, Mg, Al), Inert gases (He, Ne, Ar)
Non-metals: E.g., H2, CL2, P4, S8
(b) The number of atoms constituting a molecule is known as its atomicity.
E.g., O3 —> atomicity is 3
O2 —> atomicity is 2
(c) Polyatomic ions: When more than two atoms combine together and act like an atom with a charge on it is called polyatomic ion.
E.g., OH–, N03–, NH4+
Advertisements