State whether the following statements are true or false:
$(i)$ Isobars have different atomic numbers.
$(ii)$ $_{14}^{30}\text{Si}$,$_{16}^{32}\text{S}$ are isotones.
$(iii)$ Niels Bohr was the first to suggest that the atom is spherical.
$(iv)$ Rutherford's model is accepted as the nuclear model of the atom.

(N/A) $(i)$ True: Isobars are atoms of different elements with the same mass number but different atomic numbers.
$(ii)$ True: Isotones have the same number of neutrons. For $_{14}^{30}\text{Si}$,$n = 30 - 14 = 16$. For $_{16}^{32}\text{S}$,$n = 32 - 16 = 16$. Since both have $16$ neutrons,they are isotones.
$(iii)$ False: $J$.$J$. Thomson was the first to suggest that the atom is spherical.
$(iv)$ True: Rutherford's alpha-particle scattering experiment led to the discovery of the nucleus,establishing the nuclear model of the atom.