User login
Call 1800-123-2003
Our Schools
SabariGiri Residential School
"Smartindia is the best online tool for school students." Ms Deepa Chandran, Principal Anchal
M. G. M. Model School
"Smartindia is one of the best supplementary education tool for school students." Ms Pooja, Principal
Read More
Demo Video
Ask a Teacher
- CBSE
- ICSE/ISC
- Kerala (English Medium)
-
IGCSE
- All Questions
- Cambridge Pre-Primary 1
- Cambridge Pre-Primary 2
- Cambridge Primary Grade 1
- Cambridge Primary Grade 2
- Cambridge Primary Grade 3
- Cambridge Primary Grade 4
- Cambridge Secondary Grade 5
- Cambridge Secondary Grade 6
- Cambridge Secondary Grade 7
- Cambridge Secondary Grade 8
- Cambridge Secondary Grade 9
- Cambridge Secondary Grade 10
- Cambridge Advanced Grade 11
- Cambridge Advanced Grade 12
What is the difference between ions and electrons? |
Ions are atoms or molecules that have gained or lost one or more of their valence electrons and have a net positive or negative charge. An electron is a subatomic particle that carries a negative charge and is usually found in the orbitals of atoms and ions. |