Dalton's atomic theory successfully explained : (i) Law of conservation of mass (ii) Law of constant proportion (iii) Law of radioactivity (iv) Law of multiple proportion Correct option is :

Which one of the following is not explained by the Dalton's atomic theory?

Which of the following statements are incorrect about the structure of an atom? (i) The atom as a whole is neutral. (ii) The atom is an indivisible particle. (iii) The whole mass of an atom is concen…

Rutherford's α-particle scattering experiment shows that : (i) electrons have negative charge. (ii) the mass and positive charge of the atom is concentrated in the nucleus. (iii) neutron exists in th…

What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons?

Atomic mass of an element is equal to the sum of number of