Which of the following is isoelectronic with a carbon atom?

Which of the following pairs represents an iso-electronic species?

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.

Which property is different for neutral atoms of the two isotopes of the same element?

Which of the following atoms or ions is isoelectronic with neon $(Ne)$?

Symbols $_{35}^{79} Br$ and $^{79} Br$ can be written,whereas symbols $_{79}^{35} Br$ and $^{35} Br$ are not acceptable. Answer briefly.