How to revise Digestive system in an easy way?
Human digestive system includes two basic things Alimentary canal 2. Digestive glands 1 Alimentary canal : human alimentary canal is basically a pipe of varying diameter which is designed for […]
How to find a lone pair in simple way?
Step 1: write the configuration of element and then show the valence elactrons around the symbol of element . Step2: make the bonds around the atom according to its valency […]
