Textbook Problem

Which simple ion would each of the following elements be expected to form? Which noble gas has an analogous electron configuration to each of the ions?

msp;  $\begin{array}{l}\text{a}.\text{ bromine},\text{ Z }=\text{ 35}\\ \text{b}.\text{ cesium},\text{ Z }=\text{ 55}\\ \text{c}.\text{ phosphorus},\text{ Z }=\text{ 15}\\ \text{d}.\text{ sulfur},\text{ Z }=\text{ 16}\end{array}$