Chapter 1, Problem 19P

Interpretation Introduction

Interpretation:

The given species (a) ${\text{H}}^{\text{+}}$ (b) ${\text{He}}^{\text{+}}$ (c) ${\text{He}}^{-}$ (d) ${\text{Li}}^{\text{+}}$ (e) ${\text{Li}}^{\text{2+}}$ are hydrogen like or not, is to be determined.

Concept Introduction:

Atomic number of hydrogen is 1 and its mass number is also 1. It is represented as $\text{H}$. Hydrogen atom has one electron and one proton and has zero overall charge.

Isoelectronic species are elements or ions that have the same number of electrons but different atomic mass.