Atoms are not point masses. What is the simplest evidence in nature ?

Carbon occur in nature as a mixture of C-12 and C-13 . Average atomic mass of carbon is 12.011 what is the % abundance of C-12 in nature ?

Carbon occur in nature as a mixture of C-12 and C-13 . Average atomic mass of carbon is 12.011 what is the % abundance of C-12 in nature ?

What evidence is there that sound is not electromagnetic in nature?

What evidence is there to show that sound is not electromagnetic in nature ?

A cubic crystalline solid contains A atoms at the comers and B atoms at the body centres. If one atom from a comer is missing, what will be the simplest formula of the resulting solid?

The element bron occurs in nature as two isotopes havein atomic masses 10 u and 11 u . What are the percentage abundances of these isotopes in a sample of boron having average atomic mass of 10.8 u?

Electromagnetic waves are transverse is nature is evident by