Question

the electron configuration for zinc is __________, while that of the zinc 2+ ion is ________. ar3d^54s^2, ar3d^34s^2 ar4s^23d^10, ar3d^10 ar3d^104s^2, ar3d^84s^2 ar3d^24s^10, ar3d^104s^2 question 6 1 pts in chemistry, the formula for an ionic compound represents__________. the ratio of protons to neutrons present in a substance the simplest whole number ratio of elements present in the substance the ratio electrons to protons present in a substance the ratio of isotopes present in a substance

Explanation:

1. For the electron - configuration of zinc (atomic number 30), the noble - gas core is argon (Ar, atomic number 18), and the remaining 12 electrons fill the 3d and 4s orbitals as [Ar]3d$^{10}$4s$^{2}$. When zinc forms a 2+ ion, it loses the two 4s electrons, resulting in an electron - configuration of [Ar]3d$^{10}$.
2. The formula for an ionic compound represents the simplest whole - number ratio of elements present in the substance. This is based on the concept of the empirical formula for ionic compounds, which shows the relative number of each type of ion in the compound.

Answer:

1. [Ar]3d$^{10}$4s$^{2}$, [Ar]3d$^{10}$
2. the simplest whole number ratio of elements present in the substance