According to Dalton’s Atomic Theory, compounds form when atoms of different elements unite in a constant, simple, whole-number ratio, not any arbitrary ratio. This principle underpins the law of definite proportions. Consequently, statement (1) is inaccurate. The remaining statements accurately depict the indivisible nature of atoms and their role in chemical reactions as per Dalton’s theory.
Considering Bohr’s atomic model for hydrogen atom :
(A) the energy of H atom in ground state is same as energy of He+ ion in its first excited state.
(B) the energy of H atom in ground state is same as that for Li++ ion in its second excited state.
(C) the energy of H atom in its ground state is same as that of He+ ion for its ground state.
(D) the energy of He+ ion in its first excited state is same as that for Li++ ion in its ground state.