Question

Aditi's teacher was explaining elements and compounds and wrote Neon and Chlorine as examples of elements. She wrote the formulae of both the elements on board. Aditi had a doubt that why teacher has written the formulae differently. Give reason to solve her doubt.

Answer 1

Answer:

because their atomic number and atomic mass are different.

atomic number of neon is 10. and atomic mass is 20.2

atomic number of chlorine is 17. and atomic mass is 35.5